CA1099500A - Shaping head with interchangeable reversible cutters - Google Patents
Shaping head with interchangeable reversible cuttersInfo
- Publication number
- CA1099500A CA1099500A CA323,661A CA323661A CA1099500A CA 1099500 A CA1099500 A CA 1099500A CA 323661 A CA323661 A CA 323661A CA 1099500 A CA1099500 A CA 1099500A
- Authority
- CA
- Canada
- Prior art keywords
- stop
- shaping head
- cutter
- cone
- reversible
- 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.)
- Expired
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
- B27G13/00—Cutter blocks; Other rotary cutting tools
- B27G13/02—Cutter blocks; Other rotary cutting tools in the shape of long arbors, i.e. cylinder cutting blocks
- B27G13/04—Securing the cutters by mechanical clamping means
Abstract
ABSTRACT OF THE DISCLOSURE:
A shaping head having interchangeable, reversible cutters, the projecting outer cutting edges of which consti-tute the cutting circle, characterized in that at least one adjustable stop-element, secured to shaping head, is associated with each reversible cutter, the cutter bearing against the stop-element for the purpose of adjustment to the cutting circle. The stop-element comprises a stop-cone having an axis substantially at right angles to the surface of the reversible cutter, the stop-cone being axially adjustable and bearing against the inner cutting edge of the cutter.
A shaping head having interchangeable, reversible cutters, the projecting outer cutting edges of which consti-tute the cutting circle, characterized in that at least one adjustable stop-element, secured to shaping head, is associated with each reversible cutter, the cutter bearing against the stop-element for the purpose of adjustment to the cutting circle. The stop-element comprises a stop-cone having an axis substantially at right angles to the surface of the reversible cutter, the stop-cone being axially adjustable and bearing against the inner cutting edge of the cutter.
Description
a3~5(3i~
The present invention relates to a shaping (planing, routing) head having interchangeable reversible cutters, the projecting outer cutting edges of which constitute the cut-ting circle.
Reversible cutters have cutting edges on opposite si-des, so that when one edge becomes dull, the cutter may be ro-tated in the head to allow the opposite cutting edge to be used.
In order to ensure that these cutting edges coincide at all times with the cutting circle, it is known to locate the rever-sible cutters in the shaping head positively ~ means of pinsor bolts. If the shaping head is incorporated into the manual shaping machine, the cutting circle corresponds to the effec-tive cutting area of the reversible cutters. If optimal cut-ting performance is to be o~tained, the distance between the outermost edge of the cuttin~ area and the fixed bearing sur-face of the manual shaping machine must have a specific dimen-sion. However, depending upon dimensional discrepancies bet-ween individual parts o~ the manual shaping machine, this distance may vary, and optimal cutting per~ormance o~ the manu-al shaping machine is therefore not alwa~s assured.
It is therefore the purpose of the present inventionto provide a shaping head having reversible cutters and ensu~
rin~ optimal cutting conditions even in the event of large dimensional discrepancies between individual parts of the manual shaping machineO
According to the present invention, there is provided a shaping head having interchangeable, reversible cutters, the projecting outer cutting edges o~ which constitute the cutting circle, characterized in that at least one adjustable stop-element, secured to shaping head, is associated with eachreversible cutter, said cutter bearing against the stop-eLement 995~
for the purpose of adjustment to the cutting circle. The stop-element comprises a stop-cone having an axis substantially at right angles to the surface of the reversible cutter, ~aid stop-cone being axially adjustable and bearing against the inner cutting edge of the said cutter.
This adjustment ma~es it possible to obtain the desi-red optimal distance between the outermost edge of the cutting area and the fixed bearing surface, thus making it possible to adjust each individual manual shaping machine for optimal cutting performance. This is particularly advantageous in the case of manual shaping machines the parts of which are made by modern production methods, without any machining, or example by injection-moulding. Although these modern methods greatly reduce production costs, larger tolerances must inevitably be allowed for. These tolerances may be compensated fox by the adjustability of the reversible cutters according to the invention.
According to one advantageous example of embodiment, the stop-element is formed by the truncated-conical head of a commercial countersunk screw bolt, against the outer surface of which the cutting edge of the reversible cutter bears. A
suitable choice of the angle of the conical head of the counter-sunk bolt, and of the bevel-angle of the cutting edge of the cutter, ensures point contact between the stop cone and the reversible cutter. This provides particularly accurate adjust-ment of the cutter.
Another advantageous characteristic of the shaping head according to the invention resides in the easily proces-sed ~machined) bearing surface of a shaft-body against which the reversible cutters are pressed by means of jaws (straps~.
According to the invention, these jaws have holes in alignment with the stop elements, through which the said stop element ~- 2 9~s~o may be adjusted with an appropriate tool. Moreover 3 this adjustment may be carried out with the shaping installed or removed.
The jaws are secured to the shaft-body in known fashion by means of boltsO According to ~he invention, however, these bolts are screwed into the steel shaft secured in the aluminum shaft-body, thus ensuring a more reliable joint.
According to the invention, the jaw is also provided with a clamping surface for the reversible blade, and with an .
- 2a -~ 9~5(~
opposing supporting surface. Now if the jaw is secured im improperly to the shaft body, i.e. with the supporting surface, instead of the clamping surface, towards the reversible blade, then the supporting surface rests upon the head of the stop-element and the reversible cutter cannot be clamped. The operator is therefore immediately aware that the jaw is im-properly fitted and may take appropriate action to correct the matter.
An example of embodiment of the invention is explained hereinafter in conjunction with the drawing attached hereto, wherein :
Fig.l is a side elevation of ~he shaping head, in part section along the lines I-I and II~II in Fig.2 ;
Fig. 2 is a front elevation of the shaping head;
Fig. 3 is a detail from Fig. 1, to an enlarged scale~
Shaping head 1 illustrated in Fig. 1 and 2 has a carrier in the form of shaft~body 2 made of aluminum into which a steel shaft 3 is pressed. Shaft body 2 is defined by two parallel bearing surfaces 4, interrupted centrally by a wide recess 5 and outwardly by a narrower recess 6. Radial thread-ed holes 7, for attachment bolts 8, pass through shaft body
The present invention relates to a shaping (planing, routing) head having interchangeable reversible cutters, the projecting outer cutting edges of which constitute the cut-ting circle.
Reversible cutters have cutting edges on opposite si-des, so that when one edge becomes dull, the cutter may be ro-tated in the head to allow the opposite cutting edge to be used.
In order to ensure that these cutting edges coincide at all times with the cutting circle, it is known to locate the rever-sible cutters in the shaping head positively ~ means of pinsor bolts. If the shaping head is incorporated into the manual shaping machine, the cutting circle corresponds to the effec-tive cutting area of the reversible cutters. If optimal cut-ting performance is to be o~tained, the distance between the outermost edge of the cuttin~ area and the fixed bearing sur-face of the manual shaping machine must have a specific dimen-sion. However, depending upon dimensional discrepancies bet-ween individual parts o~ the manual shaping machine, this distance may vary, and optimal cutting per~ormance o~ the manu-al shaping machine is therefore not alwa~s assured.
It is therefore the purpose of the present inventionto provide a shaping head having reversible cutters and ensu~
rin~ optimal cutting conditions even in the event of large dimensional discrepancies between individual parts of the manual shaping machineO
According to the present invention, there is provided a shaping head having interchangeable, reversible cutters, the projecting outer cutting edges o~ which constitute the cutting circle, characterized in that at least one adjustable stop-element, secured to shaping head, is associated with eachreversible cutter, said cutter bearing against the stop-eLement 995~
for the purpose of adjustment to the cutting circle. The stop-element comprises a stop-cone having an axis substantially at right angles to the surface of the reversible cutter, ~aid stop-cone being axially adjustable and bearing against the inner cutting edge of the said cutter.
This adjustment ma~es it possible to obtain the desi-red optimal distance between the outermost edge of the cutting area and the fixed bearing surface, thus making it possible to adjust each individual manual shaping machine for optimal cutting performance. This is particularly advantageous in the case of manual shaping machines the parts of which are made by modern production methods, without any machining, or example by injection-moulding. Although these modern methods greatly reduce production costs, larger tolerances must inevitably be allowed for. These tolerances may be compensated fox by the adjustability of the reversible cutters according to the invention.
According to one advantageous example of embodiment, the stop-element is formed by the truncated-conical head of a commercial countersunk screw bolt, against the outer surface of which the cutting edge of the reversible cutter bears. A
suitable choice of the angle of the conical head of the counter-sunk bolt, and of the bevel-angle of the cutting edge of the cutter, ensures point contact between the stop cone and the reversible cutter. This provides particularly accurate adjust-ment of the cutter.
Another advantageous characteristic of the shaping head according to the invention resides in the easily proces-sed ~machined) bearing surface of a shaft-body against which the reversible cutters are pressed by means of jaws (straps~.
According to the invention, these jaws have holes in alignment with the stop elements, through which the said stop element ~- 2 9~s~o may be adjusted with an appropriate tool. Moreover 3 this adjustment may be carried out with the shaping installed or removed.
The jaws are secured to the shaft-body in known fashion by means of boltsO According to ~he invention, however, these bolts are screwed into the steel shaft secured in the aluminum shaft-body, thus ensuring a more reliable joint.
According to the invention, the jaw is also provided with a clamping surface for the reversible blade, and with an .
- 2a -~ 9~5(~
opposing supporting surface. Now if the jaw is secured im improperly to the shaft body, i.e. with the supporting surface, instead of the clamping surface, towards the reversible blade, then the supporting surface rests upon the head of the stop-element and the reversible cutter cannot be clamped. The operator is therefore immediately aware that the jaw is im-properly fitted and may take appropriate action to correct the matter.
An example of embodiment of the invention is explained hereinafter in conjunction with the drawing attached hereto, wherein :
Fig.l is a side elevation of ~he shaping head, in part section along the lines I-I and II~II in Fig.2 ;
Fig. 2 is a front elevation of the shaping head;
Fig. 3 is a detail from Fig. 1, to an enlarged scale~
Shaping head 1 illustrated in Fig. 1 and 2 has a carrier in the form of shaft~body 2 made of aluminum into which a steel shaft 3 is pressed. Shaft body 2 is defined by two parallel bearing surfaces 4, interrupted centrally by a wide recess 5 and outwardly by a narrower recess 6. Radial thread-ed holes 7, for attachment bolts 8, pass through shaft body
2 and shaft 3.
Bolts 8 are used to secure jaws ~plates) 9 to shaft-body 2, the said jaws having a supporting surface 10 of width B on one side and a clamping surface 11 on the other side.
Through-passages 12, with counterbores 13, are located in the jaws in the vicinity of clamping surfaces llo Diagonally opposite, two reversible cutters 14 are pressed, by clamping surfaces 11 of jaws 9, against bearing surfaces 4. Cutters 14 have cutting edges 15 on both sides, the outer edges being the generatrix of cutting circle 16.
Jaws 9 carry safety re-taining-dowels 17 which engage in apertures in cutters 14 and prevent improperly clamped cutters from flying off.
Arranged in shaft body 2, parallel with threaded holes 7, are additional threaded holes 19 into which stop-elements 20 are screwed. In the example of embodiment illustrated, these elemen~s are commercial countersunk screws, the heads of which serve as stop-cones 21 having a cone-angle 22. (see Fig. 3). Inner cutting edge 15 of cutter 14 rests upon stop-cone 21. Cone-angle 22 of stop-cone 21, and bevel-angle 23 of cutting edge 15 are matched in such a manner that only the outer tip of the cutting edge is in contact~ with cone 21.
When reversible cutters 14 are to be accurately adjust-ed, jaws 9 are first of all fitted loosely. Stop-element 20 i5 rotated, by means of a tool introduced through passage 12, until outermost cutting edge 15 coincides with cutting circle 16. The said stop-element is then secured with a locking adhesive, to prevent it from being inadvertently loosened.
The dis-tance between the outermost edge of jaw 9 and the closest point on stop-cone 21 may be marked A. If the width s of supporting surface 10 of jaw 9 is made greater than distance A, then if jaw 9 is improperly fitted, cutter 14 can-not be clamped in position, since supporting surface 10 will be seated upon end-face 24 of stop cone 21.
Bolts 8 are used to secure jaws ~plates) 9 to shaft-body 2, the said jaws having a supporting surface 10 of width B on one side and a clamping surface 11 on the other side.
Through-passages 12, with counterbores 13, are located in the jaws in the vicinity of clamping surfaces llo Diagonally opposite, two reversible cutters 14 are pressed, by clamping surfaces 11 of jaws 9, against bearing surfaces 4. Cutters 14 have cutting edges 15 on both sides, the outer edges being the generatrix of cutting circle 16.
Jaws 9 carry safety re-taining-dowels 17 which engage in apertures in cutters 14 and prevent improperly clamped cutters from flying off.
Arranged in shaft body 2, parallel with threaded holes 7, are additional threaded holes 19 into which stop-elements 20 are screwed. In the example of embodiment illustrated, these elemen~s are commercial countersunk screws, the heads of which serve as stop-cones 21 having a cone-angle 22. (see Fig. 3). Inner cutting edge 15 of cutter 14 rests upon stop-cone 21. Cone-angle 22 of stop-cone 21, and bevel-angle 23 of cutting edge 15 are matched in such a manner that only the outer tip of the cutting edge is in contact~ with cone 21.
When reversible cutters 14 are to be accurately adjust-ed, jaws 9 are first of all fitted loosely. Stop-element 20 i5 rotated, by means of a tool introduced through passage 12, until outermost cutting edge 15 coincides with cutting circle 16. The said stop-element is then secured with a locking adhesive, to prevent it from being inadvertently loosened.
The dis-tance between the outermost edge of jaw 9 and the closest point on stop-cone 21 may be marked A. If the width s of supporting surface 10 of jaw 9 is made greater than distance A, then if jaw 9 is improperly fitted, cutter 14 can-not be clamped in position, since supporting surface 10 will be seated upon end-face 24 of stop cone 21.
Claims (7)
1. A shaping head having interchangeable, reversible cutters, the projecting outer cutting edges of which consti-tute the cutting circle, characterized in that at least one adjustable stop-element, secured to shaping head, is associa-ted with each reversible cutter, said cutter bearing against said stop-element for the purpose of adjustment to the cutting circle, said stop-element comprising a stop-cone having an axis substantially at right angles to the surface of the reversible cutter, said stop-cone being axially adjustable and bearing against the inner cutting edge of the said cutter.
2. A shaping head according to claim 1, characterized in that the stop-element consists of a commercial countersunk bolt which is screwed to the shaping head.
3. A shaping head according to claim 1 or 2, charac-terized in that said stop-cone has a cone-angle which is such that in the case of a shaping head comprising a reversible cutter and a stop-element, only the outer tip of the cutting edge is in contact with the stop-cone.
4. A shaping head according to claim 1, having a shaft body defined by two parallel bearing surfaces, and jaws associated therewith, characterized in that the reversible cutters are arranged between the bearing surfaces and the jaws.
5. A shaping head according to claim 4, characterized in that the jaws are provided with through-passages in axial alignment with the stop-elements.
6. A shaping head according to claim 5, characte-rized in that the jaw comprises a clamping surface for the reversible cutter and a supporting surface abutting against the bearing surface of the shaft-body; counterbores being provided for the stop-cones, in the jaw, in the vicinity of the stop-elements; the width B of the supporting surface being greater than the distance A between the stop-cone and the outermost edge of the jaw.
7. A shaping head according to claims 4, 5 or 6, having a shaft secured in the shaft-body, characterized in that attachment screws pass through the jaws and through the shaft-body and are screwed into the shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2811669.0 | 1978-03-17 | ||
| DE19782811669 DE2811669C2 (en) | 1978-03-17 | 1978-03-17 | Planer head with reversible knives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099500A true CA1099500A (en) | 1981-04-21 |
Family
ID=6034723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA323,661A Expired CA1099500A (en) | 1978-03-17 | 1979-03-16 | Shaping head with interchangeable reversible cutters |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0004312B1 (en) |
| AT (1) | AT368930B (en) |
| CA (1) | CA1099500A (en) |
| DE (1) | DE2811669C2 (en) |
| ES (1) | ES478721A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3464022D1 (en) * | 1983-05-24 | 1987-07-09 | Lutz Eugen & Co | Planing tool and profile cutter suitable therefor |
| EP0156934A1 (en) * | 1984-04-02 | 1985-10-09 | Fritz Vogelmann | Tool for working non-metallic work pieces |
| EP0265622B1 (en) * | 1986-10-28 | 1993-06-02 | Oertli Werkzeuge Ag | Cutter block |
| DE29500774U1 (en) * | 1995-01-19 | 1996-05-23 | Bosch Gmbh Robert | Hand planer |
| CN111496900B (en) * | 2020-04-27 | 2021-06-25 | 华中科技大学 | Flexible clamping device and method for providing uniform force and vibration cutting device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE228560C (en) * | ||||
| DE454778C (en) * | 1928-01-17 | Joh Bernhard Brokamp | Knife setting, especially for planer knife shafts | |
| DE225420C (en) * | ||||
| FR334412A (en) * | 1903-08-04 | 1903-12-21 | Nicolas Ambroise Mougeotte | Planer blade holder |
| FR681664A (en) * | 1929-09-12 | 1930-05-17 | Improvements to knife shafts of wood planing machines | |
| CH266438A (en) * | 1947-01-13 | 1950-01-31 | Klemm Artur | Wood planing machine with a knife shaft and a device for adjusting and aligning the knives of the same. |
| US2598933A (en) * | 1948-10-29 | 1952-06-03 | Edward J Nevin | Knife assembly for rotary cutters |
| DE1164070B (en) * | 1959-02-26 | 1964-02-27 | Paul Kirsten Dr Ing | Tool carriers, especially of cylindrical design, for wood cutting machines |
| CH403278A (en) * | 1961-01-07 | 1965-11-30 | Wilhelm Grupp Werkzeug Und Mas | Knife shaft |
| CH471651A (en) * | 1968-07-03 | 1969-04-30 | Oertli & Co Werkzeugfabrik | Chamfering and joining cutter head with swiveling knives |
| US3933189A (en) * | 1974-09-09 | 1976-01-20 | Powermatic/Houdaille, Inc. | Noise reducing planter cutter head |
| DE7716648U1 (en) * | 1977-05-26 | 1977-09-22 | Arens, Klaus, 6114 Gross-Umstadt | PRESSURE PIECE WITH REVERSIBLE KNIFE FOR PLANE KNIFE SHAFTS |
-
1978
- 1978-03-17 DE DE19782811669 patent/DE2811669C2/en not_active Expired
-
1979
- 1979-03-07 EP EP19790100673 patent/EP0004312B1/en not_active Expired
- 1979-03-15 AT AT195579A patent/AT368930B/en not_active IP Right Cessation
- 1979-03-16 ES ES478721A patent/ES478721A1/en not_active Expired
- 1979-03-16 CA CA323,661A patent/CA1099500A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2811669A1 (en) | 1979-10-25 |
| EP0004312A1 (en) | 1979-10-03 |
| AT368930B (en) | 1982-11-25 |
| EP0004312B1 (en) | 1981-09-02 |
| DE2811669C2 (en) | 1983-11-17 |
| ATA195579A (en) | 1982-04-15 |
| ES478721A1 (en) | 1979-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |