CA1102664A - Hand planing machine with parallel supporting surfaces - Google Patents
Hand planing machine with parallel supporting surfacesInfo
- Publication number
- CA1102664A CA1102664A CA321,658A CA321658A CA1102664A CA 1102664 A CA1102664 A CA 1102664A CA 321658 A CA321658 A CA 321658A CA 1102664 A CA1102664 A CA 1102664A
- Authority
- CA
- Canada
- Prior art keywords
- hood
- side walls
- planing
- housing
- head
- 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
- B27G21/00—Safety guards or devices specially designed for other wood-working machines auxiliary devices facilitating proper operation of said wood-working machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
- B27C1/00—Machines for producing flat surfaces, e.g. by rotary cutters; Equipment therefor
- B27C1/10—Hand planes equipped with power-driven cutter blocks
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE :
Hand planing machine with parallel supporting surfaces and a driven planing head mounted in a housing and engaging in an intermediate space between the supporting surfaces. It has a protective hood which surrounds part of the planing head and which is pivotably mounted in the intermediate space. This protective hood is pivotably mounted on the housing against the effect of a spring, concentric to the axis of the planing head.
Hand planing machine with parallel supporting surfaces and a driven planing head mounted in a housing and engaging in an intermediate space between the supporting surfaces. It has a protective hood which surrounds part of the planing head and which is pivotably mounted in the intermediate space. This protective hood is pivotably mounted on the housing against the effect of a spring, concentric to the axis of the planing head.
Description
6~
The present invention relates ko a hand planing machine with parallel supporting surfaces and a rotary planing head mounted in a housing and engaging in an intermediate opening-de~ining space between the supporting surfaces.
In these hand planing machines, the planing head e~uipped with the planing blades, projects beyond at least one supporting surface according to the planing depth desired. The rotary planing head, ~herefore, lies partially exposed both along its circumference and also at its end faces, whilst on fillisters, covering flaps wh}ch can be swung away are known for covering over one end face of the planing head.
If the operator inadvertently comes into contact with the rotating planing head when picking up the hand planing machine, this can result in serious hand injuries. If the hand planing machine is set down with the planing head still rotating, this may either damage the surface it is put down on, or else its blades may be damaged by a hard surface, such as a concrete floor, for instance.
It is therefore an object of the present invention to provide a hand planing machine of the kind described above which affords the highest possible level of protection from injury and damage, and wherein the safety device operates reliably.
This object is achieved in that a protection hood which surrounds part of the planing head is mounted pivotably in the intermediate space. A protection hood of this kind completely covers the exposed parts of the planing head, both along its circumerence and at its end faces, after the workpiece has been removed, so that contact with the planing head, and there~ore injury, is prevented. When the hand planing machine is set down, it rests on the protection hood, which thus safe]y shields the planing head from the surface on which it has been `'' 1 ' , laid. m is covering is particularly important when roughing plane blades are being used, the movement path of which projects approximately 1 mm beyond the support. In this case it was previously necessary to fit special spacex elements which could be swung away on the machine housing in the vicinity of the supporting surfaces, these were intended to prevent contact between the plane blades and the surface on which it was laid when the hand planing machine was set down. These spacer elements are made superfluous by the protection hood according to the invention.
With stationary setting-up of the hand planing machine according to the invention, this is fixed in a known way to a special frame, with its supporting surface upwards. For safety reasons, a covering part would have to be provided for the planing head in this instancer This part arranged over the supporting surfaces restricts the dimensions of the workpiece which is to be planed. With the protection hood according to the invention such an additional covering part projecting over the supporting surfacescan be omitted, so that workpieces of any desired size can be planed.
In an advantageous embodiment of the protection hood according to the invention, segmen-ts are provided, arranged in a ring on its side walls and engaging in recesses in the housing. These tooth-type segments, arranged with intervals between them, co-act with guide surfaces on the machine housing in such a way -tha~ when the protection hood is swivel-led the dust and dirt deposited on the guide surfaces is continuously wiped off, thus ensuring the reliable operation of the protection hood.
Due to the shape of the segments according to the invention, with cross-section which taper towards the inside, the intermediate spaces widen out correspondingly tcwards the inside 50 that dust and dirt can easily drop down tcwards the inside, from whence it escapes through openings provided in the machine housing.
This effect of conveying du~t and dirt through the widening intermediate spaces between the segments is enhanced by some of the motor cooling air which reaches the side walls of the protection hood via appropriate openings in the machine housing and flows through the intermediate spaces between the segments, towards the inside.
In a further advantageous development of the protection hood, at least one side wall of the protection hood has a run-up slope, which projects beyond the supporting surfaces. ~his run-up slope is a particular advantage for fillisters, where automatic opening of the protection hood is ensured when the hand planing machine is applied, even with the full rabbetting depth.
The invention, as herein broadly claimed, is a hand planing machine including a housing having upstanding side walls joined by transverse walls defining parallel supporting surfaces spaced from one another to define an opening; a planing head mounted in the housing for rotation about an axis transverse to the housing, this head being disposed in the housing so that a portion projects through the opening beyond the supporting surfaces for planing purposes. In accordance with the invention, the aforedescribed planing machine comprises a protection hood `-having a pair of side walls joined by a curved bottom wall of a size suitable to cover a peripheral portion of the head; means ~ on the head side walls and on the shell side walls, mounting the hood for pivotal movement in the housing so that, in operative position of the machine, the curved bottom wall covers the projecting portion of the planing head and, in use, is pivoted ~ -- 3 --:
~ . .. . . .. .. . .. .
inside the housing to free the planing head, and means resiliently biasing the hood toward the inoperative position.
Preferably r the head mounting means comprises a series of spaced segme~ts projecting outwardly from the hood side walls and arranged in a circle concentric to the planing head rotation axis, these segments being received in cooperating circular recesses formed on the inside faces of the shell side walls.
Preferably also, the side walls of the segments taper towara the rotation axis. Similarly, the recesses may have peripheral bearing surfaces and the segments may be formed with steps rearwardly thereof with respect to the rotation axis, which steps bear against the bearing surfaces in pivotal movement of the hood.
An embodiment of the invention is described in more detail in the following, with reference to the drawings.
Figure 1 is a side view of the hand planing machine according to the invention, with the side wall partly removed.
Figure 2 is a plan view onto the hand planing machine with a partial section along the line II - II in Figure 1.
Figure 3 is a side view of the protect~on hood according to the invention.
Figure 4 is a section along the line IV - IV in Figure 3.
The hand planing machine shown in Figure 1 with a housing 1 is provided with a wall defining a fixed supporting surface 2 and a wall defining an adjustable supporting surface 3 on a workpiece which is not shown. In an intermediate opening defining space ~, a planing head 5 is engaged between the sup-porting surfaces 2, 3 and its planing blades 6 project beyond these surfaces. It is rotatably mounted on side walls ox shells 7 and 8 of the housing 1 and is driven by an electromotor which is also mounted in the housing (Figure 2).
~? ~ 4 ~
The part of the planing head 5 which becomes accessible from the outside is surrounded b~ a protection hood 9, the side walls 10, 11 of which are provided with segments 12 arranged in a circle around the axis of rot.ation of the head 5.
The protection hood 9 is pivotably mounted concentric to the latter axis in circular recesses 13, 14 in the shells 7 and 8.
A torsion spring 15 with arm extensions is braced between the housing 1 and the side wall 10 of the protectiOn hood 9 and holds this protection hood 9 in the protecting position shown fully drawn in Figure 1. The use of a torsion spring has proved to be particularly advantageous for the present invention as its function is maintained even with heavy soiling, due to the fact that the spring coils rest directly on one another.
The protection hood 9 i6 equipped with a run-up slope 16 on its side wall 11, via which the pivoting of the protection hood 9 is initiated when the hand planing machine is applied to the workpiece, swinging it into the position shown in dashes in Figure 1. However, it is also possible to start the ~0 planing process by introducing the planing head into the woxk-piece. In this case, the protection hood is swung into inoperative position by pushing the hand planiny machine for-wards, owing to the friction between the protection hood and the surface of the workpiece. On the side wall 11 of the protect~on hood 9, a lug 17 is also provided with which the protection hood can be swung away manually.
As Figures 3 and 4 also show, the segments 12 have a cross-section which tapers inwards, so that the slits 18 located between the segments 12 widen out towards the inside.
An axiall~ machined step 19 adjoins the tapering cross-section of the segments 12 on the outside and has a guide surface 20 (Figure 4).
,,.
6~
In the installed state, the guide surfaces 20 co-act with the end faces 21 of the shells 7/ 8 in such a way that the protection hood 9 is ~uided in the axial direction~ However, the comb-type slits 18, also in the vicinity of the step 19, serve to keep the end faces 21 clean when the protection hood 9 is pivoted. ~:
The circumferential surfaces 22 on the segments 12 which are mounted ~n the annular surfaces 23 on the shells 7 and 8 are used for the radial guiding of the protection hood 9.
The comb-type arrangement of the segments 12 prevents the settling of dust and dirt in this area as well.
~ .
: - 6 -
The present invention relates ko a hand planing machine with parallel supporting surfaces and a rotary planing head mounted in a housing and engaging in an intermediate opening-de~ining space between the supporting surfaces.
In these hand planing machines, the planing head e~uipped with the planing blades, projects beyond at least one supporting surface according to the planing depth desired. The rotary planing head, ~herefore, lies partially exposed both along its circumference and also at its end faces, whilst on fillisters, covering flaps wh}ch can be swung away are known for covering over one end face of the planing head.
If the operator inadvertently comes into contact with the rotating planing head when picking up the hand planing machine, this can result in serious hand injuries. If the hand planing machine is set down with the planing head still rotating, this may either damage the surface it is put down on, or else its blades may be damaged by a hard surface, such as a concrete floor, for instance.
It is therefore an object of the present invention to provide a hand planing machine of the kind described above which affords the highest possible level of protection from injury and damage, and wherein the safety device operates reliably.
This object is achieved in that a protection hood which surrounds part of the planing head is mounted pivotably in the intermediate space. A protection hood of this kind completely covers the exposed parts of the planing head, both along its circumerence and at its end faces, after the workpiece has been removed, so that contact with the planing head, and there~ore injury, is prevented. When the hand planing machine is set down, it rests on the protection hood, which thus safe]y shields the planing head from the surface on which it has been `'' 1 ' , laid. m is covering is particularly important when roughing plane blades are being used, the movement path of which projects approximately 1 mm beyond the support. In this case it was previously necessary to fit special spacex elements which could be swung away on the machine housing in the vicinity of the supporting surfaces, these were intended to prevent contact between the plane blades and the surface on which it was laid when the hand planing machine was set down. These spacer elements are made superfluous by the protection hood according to the invention.
With stationary setting-up of the hand planing machine according to the invention, this is fixed in a known way to a special frame, with its supporting surface upwards. For safety reasons, a covering part would have to be provided for the planing head in this instancer This part arranged over the supporting surfaces restricts the dimensions of the workpiece which is to be planed. With the protection hood according to the invention such an additional covering part projecting over the supporting surfacescan be omitted, so that workpieces of any desired size can be planed.
In an advantageous embodiment of the protection hood according to the invention, segmen-ts are provided, arranged in a ring on its side walls and engaging in recesses in the housing. These tooth-type segments, arranged with intervals between them, co-act with guide surfaces on the machine housing in such a way -tha~ when the protection hood is swivel-led the dust and dirt deposited on the guide surfaces is continuously wiped off, thus ensuring the reliable operation of the protection hood.
Due to the shape of the segments according to the invention, with cross-section which taper towards the inside, the intermediate spaces widen out correspondingly tcwards the inside 50 that dust and dirt can easily drop down tcwards the inside, from whence it escapes through openings provided in the machine housing.
This effect of conveying du~t and dirt through the widening intermediate spaces between the segments is enhanced by some of the motor cooling air which reaches the side walls of the protection hood via appropriate openings in the machine housing and flows through the intermediate spaces between the segments, towards the inside.
In a further advantageous development of the protection hood, at least one side wall of the protection hood has a run-up slope, which projects beyond the supporting surfaces. ~his run-up slope is a particular advantage for fillisters, where automatic opening of the protection hood is ensured when the hand planing machine is applied, even with the full rabbetting depth.
The invention, as herein broadly claimed, is a hand planing machine including a housing having upstanding side walls joined by transverse walls defining parallel supporting surfaces spaced from one another to define an opening; a planing head mounted in the housing for rotation about an axis transverse to the housing, this head being disposed in the housing so that a portion projects through the opening beyond the supporting surfaces for planing purposes. In accordance with the invention, the aforedescribed planing machine comprises a protection hood `-having a pair of side walls joined by a curved bottom wall of a size suitable to cover a peripheral portion of the head; means ~ on the head side walls and on the shell side walls, mounting the hood for pivotal movement in the housing so that, in operative position of the machine, the curved bottom wall covers the projecting portion of the planing head and, in use, is pivoted ~ -- 3 --:
~ . .. . . .. .. . .. .
inside the housing to free the planing head, and means resiliently biasing the hood toward the inoperative position.
Preferably r the head mounting means comprises a series of spaced segme~ts projecting outwardly from the hood side walls and arranged in a circle concentric to the planing head rotation axis, these segments being received in cooperating circular recesses formed on the inside faces of the shell side walls.
Preferably also, the side walls of the segments taper towara the rotation axis. Similarly, the recesses may have peripheral bearing surfaces and the segments may be formed with steps rearwardly thereof with respect to the rotation axis, which steps bear against the bearing surfaces in pivotal movement of the hood.
An embodiment of the invention is described in more detail in the following, with reference to the drawings.
Figure 1 is a side view of the hand planing machine according to the invention, with the side wall partly removed.
Figure 2 is a plan view onto the hand planing machine with a partial section along the line II - II in Figure 1.
Figure 3 is a side view of the protect~on hood according to the invention.
Figure 4 is a section along the line IV - IV in Figure 3.
The hand planing machine shown in Figure 1 with a housing 1 is provided with a wall defining a fixed supporting surface 2 and a wall defining an adjustable supporting surface 3 on a workpiece which is not shown. In an intermediate opening defining space ~, a planing head 5 is engaged between the sup-porting surfaces 2, 3 and its planing blades 6 project beyond these surfaces. It is rotatably mounted on side walls ox shells 7 and 8 of the housing 1 and is driven by an electromotor which is also mounted in the housing (Figure 2).
~? ~ 4 ~
The part of the planing head 5 which becomes accessible from the outside is surrounded b~ a protection hood 9, the side walls 10, 11 of which are provided with segments 12 arranged in a circle around the axis of rot.ation of the head 5.
The protection hood 9 is pivotably mounted concentric to the latter axis in circular recesses 13, 14 in the shells 7 and 8.
A torsion spring 15 with arm extensions is braced between the housing 1 and the side wall 10 of the protectiOn hood 9 and holds this protection hood 9 in the protecting position shown fully drawn in Figure 1. The use of a torsion spring has proved to be particularly advantageous for the present invention as its function is maintained even with heavy soiling, due to the fact that the spring coils rest directly on one another.
The protection hood 9 i6 equipped with a run-up slope 16 on its side wall 11, via which the pivoting of the protection hood 9 is initiated when the hand planing machine is applied to the workpiece, swinging it into the position shown in dashes in Figure 1. However, it is also possible to start the ~0 planing process by introducing the planing head into the woxk-piece. In this case, the protection hood is swung into inoperative position by pushing the hand planiny machine for-wards, owing to the friction between the protection hood and the surface of the workpiece. On the side wall 11 of the protect~on hood 9, a lug 17 is also provided with which the protection hood can be swung away manually.
As Figures 3 and 4 also show, the segments 12 have a cross-section which tapers inwards, so that the slits 18 located between the segments 12 widen out towards the inside.
An axiall~ machined step 19 adjoins the tapering cross-section of the segments 12 on the outside and has a guide surface 20 (Figure 4).
,,.
6~
In the installed state, the guide surfaces 20 co-act with the end faces 21 of the shells 7/ 8 in such a way that the protection hood 9 is ~uided in the axial direction~ However, the comb-type slits 18, also in the vicinity of the step 19, serve to keep the end faces 21 clean when the protection hood 9 is pivoted. ~:
The circumferential surfaces 22 on the segments 12 which are mounted ~n the annular surfaces 23 on the shells 7 and 8 are used for the radial guiding of the protection hood 9.
The comb-type arrangement of the segments 12 prevents the settling of dust and dirt in this area as well.
~ .
: - 6 -
Claims (6)
1. A hand planing machine including a housing having upstanding shell side walls joined by transverse walls defining parallel supporting surfaces spaced from one another to define an opening; a planing head mounted in said housing for rotation about an axis transverse to said housing, said head being dis-posed in said housing so that a portion thereof project through said opening beyond at least one of said supporting surfaces for planing operation, the improvement in the combination therewith of:
- a protection hood having a pair of side walls joined by a curved bottom wall of a size suitable to cover a peripheral portion of said head;
- means, on said hood side walls and on said shell side walls, mounting said hood for pivotal movement in said hou-sing so that, in inoperative position of said machine, said curved bottom wall covers said projecting portion of said planing head, and in use, is pivoted inside said housing to free said planing head, and - means resiliently biasing said hood toward said inoperative position.
- a protection hood having a pair of side walls joined by a curved bottom wall of a size suitable to cover a peripheral portion of said head;
- means, on said hood side walls and on said shell side walls, mounting said hood for pivotal movement in said hou-sing so that, in inoperative position of said machine, said curved bottom wall covers said projecting portion of said planing head, and in use, is pivoted inside said housing to free said planing head, and - means resiliently biasing said hood toward said inoperative position.
2. A hand planing machine according to claim 1, wherein said hood mounting means comprises a series of spaced segments projecting outwardly from said hood side walls and arranged in a circle concentric to said rotation axis, said segments being received in cooperating circular recesses formed on the inside faces of said shell side walls.
3. A hand planing machine according to claim 2, wherein said segments have side walls tapering toward said rotation axis.
4. A hand planing machine according to claim 3, wherein said recesses have peripheral bearing surfaces and said segments are formed with steps rearwardly thereof with respect to said rotation axis, which steps bear against said bearing surfaces in pivotal movement of said hood.
5. A hand planing machine according to claims 1, 2 or 3, wherein at least one side wall of the protection hood has a run-up slope which projects beyond the supporting surfaces.
6. A hand planing machine according to claims 3 or 4, wherein said housing has ducts which conduct motor cooling air to the side walls of the protection hood.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782806822 DE2806822C2 (en) | 1978-02-17 | 1978-02-17 | Hand planer |
| DEP2806822.6 | 1978-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1102664A true CA1102664A (en) | 1981-06-09 |
Family
ID=6032272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA321,658A Expired CA1102664A (en) | 1978-02-17 | 1979-02-16 | Hand planing machine with parallel supporting surfaces |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0003778B1 (en) |
| JP (1) | JPS54120499A (en) |
| AT (1) | AT364516B (en) |
| CA (1) | CA1102664A (en) |
| DE (1) | DE2806822C2 (en) |
| ES (1) | ES477797A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3112369A1 (en) * | 1980-07-24 | 1982-02-25 | Robert Bosch Gmbh, 7000 Stuttgart | "PLANER WITH A MOTOR DRIVEN KNIFE ROLLER" |
| DE3406728A1 (en) * | 1984-02-24 | 1985-08-29 | Karl M. Reich Maschinenfabrik GmbH, 7440 Nürtingen | HAND PLANER |
| CN109352746A (en) * | 2018-10-16 | 2019-02-19 | 广州鹏兴科技有限公司 | A kind of equidistant cutter device of stable type construction timber |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH354926A (en) * | 1959-06-05 | 1961-06-15 | Schlaeppi Louis | Protective device for portable planer |
| DE2445233A1 (en) * | 1974-09-21 | 1976-04-08 | Metabowerke Kg | Hand plane with motor drive - has blade shaft near end of guide face where the housing ends |
| DE7812329U1 (en) * | 1978-04-22 | 1978-08-10 | Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen | HAND PLANING MACHINE WITH PROTECTIVE HOOD |
-
1978
- 1978-02-17 DE DE19782806822 patent/DE2806822C2/en not_active Expired
-
1979
- 1979-02-09 EP EP19790100371 patent/EP0003778B1/en not_active Expired
- 1979-02-15 AT AT115879A patent/AT364516B/en not_active IP Right Cessation
- 1979-02-16 CA CA321,658A patent/CA1102664A/en not_active Expired
- 1979-02-16 ES ES477797A patent/ES477797A1/en not_active Expired
- 1979-02-16 JP JP1624279A patent/JPS54120499A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2806822C2 (en) | 1980-04-17 |
| ATA115879A (en) | 1981-03-15 |
| ES477797A1 (en) | 1979-10-16 |
| DE2806822B1 (en) | 1979-08-09 |
| EP0003778B1 (en) | 1981-08-19 |
| JPS54120499A (en) | 1979-09-19 |
| AT364516B (en) | 1981-10-27 |
| EP0003778A1 (en) | 1979-09-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |