WO2004076140A1 - Planer with improved chip removal - Google Patents

Planer with improved chip removal Download PDF

Info

Publication number
WO2004076140A1
WO2004076140A1 PCT/NL2004/000148 NL2004000148W WO2004076140A1 WO 2004076140 A1 WO2004076140 A1 WO 2004076140A1 NL 2004000148 W NL2004000148 W NL 2004000148W WO 2004076140 A1 WO2004076140 A1 WO 2004076140A1
Authority
WO
WIPO (PCT)
Prior art keywords
planer
shavings
knife roller
removal channel
housing
Prior art date
Application number
PCT/NL2004/000148
Other languages
French (fr)
Inventor
Peter Wanninkhof
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to US10/547,403 priority Critical patent/US20070033807A1/en
Priority to EP04715598A priority patent/EP1601510A1/en
Publication of WO2004076140A1 publication Critical patent/WO2004076140A1/en

Links

Classifications

    • 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
    • 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
    • B23Q11/0042—Devices for removing chips

Definitions

  • the invention relates to a planer, comprising a housing, a motor arranged in the housing, a planer knife roller cavity- arranged in the housing, a planer knife roller which is arranged in the planer knife roller cavity and coupled for driving to the motor, and a shavings removal channel extending in the housing from the planer knife roller cavity.
  • planers are generally known.
  • the shavings removal channel comprises a part which extends in tangential direction and connects onto a part extending in axial direction of the planer knife roller.
  • the motor is placed behind the planer knife roller.
  • the connection of a tangential part of the channel to an axial part entails a change in direction of the airflow with the shavings entrained therein, which reduces the effectiveness of the shavings removal. Due to the change in direction the shavings will after all drop out of the airflow more easily and block the channel.
  • the object of the present invention is to provide such a planer wherein the chance of blockage of the channel is greatly reduced.
  • the shavings removal channel extends over its whole path with a directional component in the direction of movement of the planer.
  • This configuration also provides the option of placing the removal means for the shavings at the rear so that they do not obstruct the view of the workpiece.
  • the housing is provided with a handgrip extending substantially in the direction of movement, and the shavings removal channel extends through the handgrip.
  • This embodiment obviates the problem of the motor usually blocking a direct route of the removal channel by guiding the channel over the motor, and even over the housing, through the handgrip.
  • the configuration of the handgrip herein provides the option of applying a bend with a large radius of curvature, so that the influence of the inertia of the shavings is small and the shavings can be easily entrained with the airflow.
  • Another preferred embodiment provides the measure that the shavings removal channel extends above the motor and below the handgrip. Use is made here of a configuration wherein the housing is slightly elevated to provide space for the passage of the shavings removal channel above the motor.
  • the shavings removal channel extends between the motor and the planer knife roller cavity.
  • the motor is here arranged in a higher position so as to provide space for the channel.
  • the shavings removal channel preferably extends from the planer knife roller holder initially in tangential direction.
  • figure 1 shows a cross-sectional view of a first embodiment of the invention
  • figure 2 shows a cross-sectional view of a second embodiment of the invention
  • figure 3 shows a cross-sectional view of a third embodiment of the invention.
  • FIG. 1 shows in the form of a longitudinal section a planer designated as a whole with 1.
  • the planer comprises a housing 2 provided with a base plate 3. Recessed into the housing, in front of the base plate in the direction of movement, is a planer knife roller cavity 4 in which a planer knife roller 5 is placed. Planer knife roller 5 is mounted by means of a shaft 9 in bearings not shown in this figure.
  • the planer knife roller holder is driven by an electric motor 6 placed in the housing by means of a toothed belt 7 which is trained round a pulley 8 arranged on the motor shaft and a pulley 10 arranged on the planer knife roller shaft.
  • an adjustable base 11 At the front of the housing is arranged an adjustable base 11.
  • the mechanism for adjusting the base is not shown because it is of no significance for the present invention.
  • the components described up to this point can all be found in prior art planers.
  • the invention provides for the arranging of a shavings removal channel 12 which extends through a handgrip 13 integrated into the housing.
  • Handgrip 13 extends in the lengthwise direction of the planer, i.e. in the direction of movement of the planer.
  • Handgrip 13 is provided on its front side with an additional handgrip 14, wherein the handgrips are formed such that a user grips handgrip 13 with one hand and handgrip 14 with the other hand to enable good control and guiding of the planer.
  • the shavings removal channel 12 connects in tangential direction onto planer knife roller cavity 4.
  • the result hereof is that the air moving through the shavings removal channel is driven by the planer knife present on planer knife roller 5.
  • the planer knife roller 5 is after all driven in rotation at high speed, wherein the cutting edge of a planer knife arranged in planer knife roller 5 protrudes out of the planer knife roller and drives the air. This air is driven substantially in tangential direction so that a tangential airflow is created around the planer knife roller holder and continues further in the shavings removal channel.
  • Shavings removal channel 12 is dimensioned such that the passage thereof does not in any case decrease in downstream direction. This avoids blockage as much as possible.
  • the fan present on the motor shaft to strengthen the said airflow.
  • a fan is after all necessary to cool electric motor 6, and this is usually arranged on the motor shaft.
  • the airflow generated hereby can be used not only to cool motor 6 but to strengthen the airflow generated by the planer knife roller and being transmitted through shavings removal channel 12.
  • the embodiment further comprises a lever 15 for operating the switch 16.
  • a lever 15 for operating the switch 16 Use is made of lever 15 in order to place switch 16 as closely as possible to the electric motor, and thus reduce the length of the connecting wires as much as possible. It hereby becomes still possible to operate the switch with the index finger of the hand with which handgrip 13 is being grasped.
  • Shavings removal channel 12 debouches at its end in a connector 17 for a removal hose, such as a vacuum cleaner hose. It is hereby possible to discharge the shavings to a vacuum cleaner. It is possible instead to connect other discharge mechanisms, such as a collection container for shavings or collection bag therefor.
  • Figure 2 shows another embodiment, wherein corresponding components are designated with the same reference numerals.
  • the removal channel 19 is not guided through a handgrip but is accommodated in the actual housing 2.
  • the shavings removal channel 19 of the present embodiment can be given a considerably shorter construction than shavings removal channel 12 of the first embodiment. This has the further consequence that the passage thereof can take a smaller form.
  • a connector 20 can be placed connecting directly onto shavings removal channel 19, onto which connector 20 can be connected a shavings collection container 21 which is provided with a connecting piece 23 that can be coupled to connector 20.
  • connector 20 suitable for connection to a vacuum cleaner hose.
  • FIG 3 In figure 3 is shown a configuration wherein shavings removal channel 24 branches directly from planer knife roller cavity 4 on the upper side thereof. Shavings removal channel 24 hereby has an exceptionally short length as it widens directly into a connector 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)

Abstract

The present invention provides a planer, comprising: (a) a housing (2); (b) a motor (6) arranged in the housing; (c) a planer knife roller cavity (4) arranged in the housing; (d) a planer knife roller (5) arranged in the planer knife roller cavity and coupled for driving to the motor; (e) a shavings removal channel (12) extending in the housing from the planer knife roller cavity, characterized in that the shavings removal channel extends over its whole path with a directional component in the direction of movement of the planer.

Description

PLANER WITH IMPROVED CHIP REMOVAL
The invention relates to a planer, comprising a housing, a motor arranged in the housing, a planer knife roller cavity- arranged in the housing, a planer knife roller which is arranged in the planer knife roller cavity and coupled for driving to the motor, and a shavings removal channel extending in the housing from the planer knife roller cavity. Such planers are generally known.
In such planers the shavings removal channel comprises a part which extends in tangential direction and connects onto a part extending in axial direction of the planer knife roller. In most planers the motor is placed behind the planer knife roller. The connection of a tangential part of the channel to an axial part entails a change in direction of the airflow with the shavings entrained therein, which reduces the effectiveness of the shavings removal. Due to the change in direction the shavings will after all drop out of the airflow more easily and block the channel.
Another drawback of this prior art configuration is that a removal hose or a collection container for shavings is placed on the side of the planer. This obstructs the view of the workpiece.
The object of the present invention is to provide such a planer wherein the chance of blockage of the channel is greatly reduced.
This object is achieved in that the shavings removal channel extends over its whole path with a directional component in the direction of movement of the planer. This configuration also provides the option of placing the removal means for the shavings at the rear so that they do not obstruct the view of the workpiece.
This measure has the consequence that the airflow which entrains the shavings is not subject to changes in direction, or hardly so, so that blockage is considerably reduced. According to a first embodiment, the housing is provided with a handgrip extending substantially in the direction of movement, and the shavings removal channel extends through the handgrip.
This embodiment obviates the problem of the motor usually blocking a direct route of the removal channel by guiding the channel over the motor, and even over the housing, through the handgrip. The configuration of the handgrip herein provides the option of applying a bend with a large radius of curvature, so that the influence of the inertia of the shavings is small and the shavings can be easily entrained with the airflow.
Another preferred embodiment provides the measure that the shavings removal channel extends above the motor and below the handgrip. Use is made here of a configuration wherein the housing is slightly elevated to provide space for the passage of the shavings removal channel above the motor.
According to yet another preferred embodiment, the shavings removal channel extends between the motor and the planer knife roller cavity. The motor is here arranged in a higher position so as to provide space for the channel.
In all three embodiments the shavings removal channel preferably extends from the planer knife roller holder initially in tangential direction. Other attractive preferred embodiments are stated in the remaining sub-claims.
The present invention will be elucidated hereinbelow with reference to the annexed figures, in which: figure 1 shows a cross-sectional view of a first embodiment of the invention; figure 2 shows a cross-sectional view of a second embodiment of the invention; and figure 3 shows a cross-sectional view of a third embodiment of the invention.
Figure 1 shows in the form of a longitudinal section a planer designated as a whole with 1. The planer comprises a housing 2 provided with a base plate 3. Recessed into the housing, in front of the base plate in the direction of movement, is a planer knife roller cavity 4 in which a planer knife roller 5 is placed. Planer knife roller 5 is mounted by means of a shaft 9 in bearings not shown in this figure. The planer knife roller holder is driven by an electric motor 6 placed in the housing by means of a toothed belt 7 which is trained round a pulley 8 arranged on the motor shaft and a pulley 10 arranged on the planer knife roller shaft.
At the front of the housing is arranged an adjustable base 11. The mechanism for adjusting the base is not shown because it is of no significance for the present invention. The components described up to this point can all be found in prior art planers.
The invention provides for the arranging of a shavings removal channel 12 which extends through a handgrip 13 integrated into the housing. Handgrip 13 extends in the lengthwise direction of the planer, i.e. in the direction of movement of the planer.
Handgrip 13 is provided on its front side with an additional handgrip 14, wherein the handgrips are formed such that a user grips handgrip 13 with one hand and handgrip 14 with the other hand to enable good control and guiding of the planer.
The shavings removal channel 12 connects in tangential direction onto planer knife roller cavity 4. The result hereof is that the air moving through the shavings removal channel is driven by the planer knife present on planer knife roller 5. The planer knife roller 5 is after all driven in rotation at high speed, wherein the cutting edge of a planer knife arranged in planer knife roller 5 protrudes out of the planer knife roller and drives the air. This air is driven substantially in tangential direction so that a tangential airflow is created around the planer knife roller holder and continues further in the shavings removal channel.
Shavings removal channel 12 is dimensioned such that the passage thereof does not in any case decrease in downstream direction. This avoids blockage as much as possible.
Although not shown in the figure, use can be made of the fan present on the motor shaft to strengthen the said airflow. A fan is after all necessary to cool electric motor 6, and this is usually arranged on the motor shaft. The airflow generated hereby can be used not only to cool motor 6 but to strengthen the airflow generated by the planer knife roller and being transmitted through shavings removal channel 12.
The embodiment further comprises a lever 15 for operating the switch 16. Use is made of lever 15 in order to place switch 16 as closely as possible to the electric motor, and thus reduce the length of the connecting wires as much as possible. It hereby becomes still possible to operate the switch with the index finger of the hand with which handgrip 13 is being grasped.
Shavings removal channel 12 debouches at its end in a connector 17 for a removal hose, such as a vacuum cleaner hose. It is hereby possible to discharge the shavings to a vacuum cleaner. It is possible instead to connect other discharge mechanisms, such as a collection container for shavings or collection bag therefor.
Figure 2 shows another embodiment, wherein corresponding components are designated with the same reference numerals. In this embodiment the removal channel 19 is not guided through a handgrip but is accommodated in the actual housing 2. Thus is achieved that the shavings removal channel 19 of the present embodiment can be given a considerably shorter construction than shavings removal channel 12 of the first embodiment. This has the further consequence that the passage thereof can take a smaller form.
As a result a connector 20 can be placed connecting directly onto shavings removal channel 19, onto which connector 20 can be connected a shavings collection container 21 which is provided with a connecting piece 23 that can be coupled to connector 20.
It is also possible in this configuration to make connector 20 suitable for connection to a vacuum cleaner hose.
In figure 3 is shown a configuration wherein shavings removal channel 24 branches directly from planer knife roller cavity 4 on the upper side thereof. Shavings removal channel 24 hereby has an exceptionally short length as it widens directly into a connector 20.
This configuration is chosen because it allows motor 6 to be placed above the planer knife roller. This enables an exceptionally short construction of the planer. This configuration moreover results in an exceptionally short embodiment of the shavings removal channel, so that the danger of blockage is extremely small. Each of the three above stated embodiments can be combined with each of the options for shavings removal, such as a connection for a removal hose, such as a vacuum cleaner hose, a collection container or bag for shavings.

Claims

1. Planer, comprising
- a housing; - a motor arranged in the housing;
- a planer knife roller cavity arranged in the housing;
- a planer knife roller arranged in the planer knife roller cavity and coupled for driving to the motor;
- a shavings removal channel extending in the housing from the planer knife roller cavity, characterized in that the shavings removal channel extends over its whole path with a directional component in the direction of movement of the planer.
2. Planer as claimed in claim 1, characterized in that the housing is provided with a handgrip extending substantially in the direction of movement, and that the shavings removal channel extends through the handgrip.
3. Planer as claimed in claim 1, characterized in that the shavings removal channel extends above the motor and below the handgrip.
4. Planer as claimed in claim 1, characterized in that the shavings removal channel extends between the motor and the planer knife roller cavity.
5. Planer as claimed in any of the foregoing claims, characterized in that the shavings removal channel extends from the planer knife roller holder initially in tangential direction.
6. Planer as claimed in any of the foregoing claims, characterised in that the passage of the shavings removal channel remains at least the same in the flow direction.
7. Planer as claimed in any of the foregoing claims, characterised in that the shavings removal channel debouches into a connector.
8. Planer as claimed in claim 7, characterized in that the connector is adapted for connection to a removal hose.
9. Planer as claimed in claim 7 or 8, characterised in that the connector is adapted for connection to a collection container for shavings .
PCT/NL2004/000148 2003-02-28 2004-02-27 Planer with improved chip removal WO2004076140A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/547,403 US20070033807A1 (en) 2003-02-28 2004-02-27 Planer with improved chip removal
EP04715598A EP1601510A1 (en) 2003-02-28 2004-02-27 Planer with improved chip removal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1022807 2003-02-28
NL1022807A NL1022807C2 (en) 2003-02-28 2003-02-28 Planer with improved chip removal.

Publications (1)

Publication Number Publication Date
WO2004076140A1 true WO2004076140A1 (en) 2004-09-10

Family

ID=32923876

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2004/000148 WO2004076140A1 (en) 2003-02-28 2004-02-27 Planer with improved chip removal

Country Status (5)

Country Link
US (1) US20070033807A1 (en)
EP (1) EP1601510A1 (en)
CN (1) CN1753768A (en)
NL (1) NL1022807C2 (en)
WO (1) WO2004076140A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006072504A3 (en) * 2004-12-30 2006-12-07 Bosch Gmbh Robert Hand-held machine tool comprising a guiding channel
DE102014212158A1 (en) * 2014-06-25 2015-12-31 Robert Bosch Gmbh Portable machine tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2346655A4 (en) * 2008-10-13 2014-02-19 Peter Atlagic Improvements in hand held, electrically powered, wood planers
US20110226103A1 (en) * 2010-03-20 2011-09-22 Frank Joeph Caruso Vaccum appliance attachment for cutting
DE102010041352A1 (en) * 2010-09-24 2012-03-29 Hilti Aktiengesellschaft Hand-held power tool with a suction adapter
CN112223431B (en) * 2019-07-15 2022-09-13 株式会社牧田 Automatic planer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1990991A (en) * 1934-04-25 1935-02-12 Heubach Ernest Electric cutter for ceilings, walls, and the like
US2583637A (en) * 1948-07-02 1952-01-29 William F Draper Portable electric planer
US4414743A (en) * 1980-12-11 1983-11-15 Black & Decker Inc. Circular saw
US5463816A (en) * 1994-05-10 1995-11-07 Ryobi North America Portable planer with adjustable chip deflector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134768A1 (en) * 1991-10-22 1993-04-29 Bosch Gmbh Robert HAND PLANER
DE19512262C2 (en) * 1995-03-24 2003-07-31 Black & Decker Inc Hand-held, motor-driven planer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1990991A (en) * 1934-04-25 1935-02-12 Heubach Ernest Electric cutter for ceilings, walls, and the like
US2583637A (en) * 1948-07-02 1952-01-29 William F Draper Portable electric planer
US4414743A (en) * 1980-12-11 1983-11-15 Black & Decker Inc. Circular saw
US5463816A (en) * 1994-05-10 1995-11-07 Ryobi North America Portable planer with adjustable chip deflector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006072504A3 (en) * 2004-12-30 2006-12-07 Bosch Gmbh Robert Hand-held machine tool comprising a guiding channel
DE102014212158A1 (en) * 2014-06-25 2015-12-31 Robert Bosch Gmbh Portable machine tool
US10391667B2 (en) 2014-06-25 2019-08-27 Robert Bosch Gmbh Portable power tool
US11097442B2 (en) 2014-06-25 2021-08-24 Robert Bosch Gmbh Portable power tool

Also Published As

Publication number Publication date
US20070033807A1 (en) 2007-02-15
NL1022807C2 (en) 2004-08-31
EP1601510A1 (en) 2005-12-07
CN1753768A (en) 2006-03-29

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