US20070295777A1 - Gauge for use with power tools - Google Patents
Gauge for use with power tools Download PDFInfo
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- US20070295777A1 US20070295777A1 US11/810,484 US81048407A US2007295777A1 US 20070295777 A1 US20070295777 A1 US 20070295777A1 US 81048407 A US81048407 A US 81048407A US 2007295777 A1 US2007295777 A1 US 2007295777A1
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- United States
- Prior art keywords
- workpiece
- housing
- gauge
- probe
- fastening device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C7/00—Accessories for nailing or stapling tools, e.g. supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/10—Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0244—Tests performed "in situ" or after "in situ" use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/16—Cutting by use of rotating axially moving tool with control means energized in response to activator stimulated by condition sensor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/21—Cutting by use of rotating axially moving tool with signal, indicator, illuminator or optical means
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- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Cable Accessories (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- Crushing And Grinding (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
A powered fastening device includes a nosepiece having a first end and a second end, and defining a channel. A housing is coupled to the first end of the nosepiece, and a handle and a trigger are coupled to the housing. A fastener driving assembly is disposed at least partially within the housing. The nail driving assembly includes a driver blade which is driven into the channel from the housing through the first end to the second end of the nose, to drive a fastener out the second end of the nosepiece and into a workpiece. A fastener loading assembly is connected with the nosepiece, and is configured to provide the fastener to the channel of the nosepiece. A sensor assembly is coupled to at least one of the nosepiece and the housing, and includes a probe for engaging the workpiece. The probe is configured to determine a measure of a structural factor of the workpiece for use in determining an operational setting of the fastening device.
Description
- This application is a continuation of U.S. patent application Ser. No. 10/959,413, filed Oct. 6, 2004, titled “Gauge for Use With Power Tools,” now pending, which is incorporated herein by reference.
- This application relates to a gauge for determining structural factors of a workpiece to be operated upon by a power tool.
- The use of power tools is commonplace in numerous locations, from construction work sites to home work shops these devices are employed to accomplish myriad tasks. These power tool devices are further used to perform their functions on a variety of different workpieces, such as wood, metal, plastic, and the like.
- Power tools may operate upon different workpieces, which may have different structural factors which may affect the task being performed. Many factors may contribute to the structural makeup of a workpiece. For instance, in a piece of wood the hardness, thickness, and the moisture content of the wood comprise structural factors.
- In an aspect, a powered fastening device includes a nosepiece having a first end and a second end, and defining a channel. A housing is coupled to the first end of the nosepiece, and a handle and a trigger are coupled to the housing. A fastener driving assembly is disposed at least partially within the housing. The nail driving assembly includes a driver blade which is driven into the channel from the housing through the first end to the second end of the nose, to drive a fastener out the second end of the nosepiece and into a workpiece. A fastener loading assembly is connected with the nosepiece, and is configured to provide the fastener to the channel of the nosepiece. A sensor assembly is coupled to at least one of the nosepiece and the housing, and includes a probe for engaging the workpiece. The probe is configured to determine a measure of a structural factor of the workpiece for use in determining an operational setting of the fastening device.
- Implementations of this aspect may include one or more of the following. The probe is configured to determine the measure of the structural factor prior to application of the second end of the nosepiece to the workpiece. The probe is configured to penetrate the workpiece to determine the measure of the structural factor of the workpiece. The sensor assembly further includes a spring connected to the probe, a sensor connected to the spring, and a linkage connected to the sensor. A user interface is communicatively coupled with the sensor assembly. A non-contact measurement and alignment system is connected to the housing. The measure of the structural parameter is used to adjust an operational setting of the tool. An adjustment system is coupled to the sensor assembly and configured to adjust an operational setting of the tool in response to the measure of the structural parameter. The structural factor includes at least one of hardness, thickness, and moisture content. The operation setting includes a driving depth of the fastener.
- In another aspect, a gauge, for use with a power tool engaging a workpiece includes a housing connected to the power tool, and a sensor assembly disposed in the housing. The sensor assembly includes a probe extending from the housing. The probe is configured to penetrate the workpiece to determine a measure of a structural factor of the workpiece for use in determining an operational setting of the power tool.
- Implementations of this aspect may include one or more of the following features. The sensor assembly further includes a spring connected to the probe, a sensor connected to the spring; and a linkage connected to the sensor. A mount connects the housing with the power tool. The housing is removable from the power tool. A user interface provides a readout of information. There is a non-contact measurement and alignment system. An adjustment system is coupled to the sensor assembly and configured to adjust an operational setting of the tool in response to the measure of the structural parameter. The structural factor comprises at least one of hardness, thickness, and moisture content. The gauge is configured for use with a powered fastening device.
- Implementations of this aspect may include one or more of the following features.
- Advantages may include one or more of the following.
- Other advantages and features will be apparent from the description, the drawings, and the claims.
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FIG. 1 is an illustration of a nail gun employing a gauge in accordance with an exemplary embodiment of the present invention; -
FIG. 2 illustrates various nails driven various depths to secure two workpieces; -
FIG. 3 is a side view illustration of the gauge connected with the nail gun wherein a probe is engaging with a workpiece; -
FIG. 4A is a side view illustration of the gauge connected with the nail gun wherein the probe is being initially positioned relative to the workpiece; -
FIG. 4B is a side view illustration of the gauge connected with the nail gun wherein the probe is engaged with the workpiece and is providing a depth reading; -
FIG. 4C is a side view illustration of the gauge connected with the nail gun wherein the probe is engaged with a workpiece and is providing a depth reading; -
FIG. 5 illustrates a method of operating the nail gun employing the gauge in accordance with an exemplary embodiment of the present invention; -
FIG. 6 is an illustration of a miter saw employing a gauge and a non-contact measurement apparatus in accordance with an exemplary embodiment of the present invention; -
FIG. 7 is a side view illustrating a probe of the gauge contacting a workpiece disposed on a frame of the miter saw; -
FIG. 8 is a side view illustrating the probe engauge with the workpiece and the non-contact measurement apparatus establishing a workpiece thickness measurement; -
FIG. 9 is a side view illustration of a saw blade of the miter saw engauged with the workpiece after the gauge and non-contact measurement apparatus have completed their readings; and -
FIG. 10 is a method of operating the miter saw employing the gauge and non-contact measurement apparatus in accordance with an exemplary embodiment of the present invention. - Referring now to
FIGS. 1 through 3 , apneumatic nail gun 100 including agauge 200 is shown. It is contemplated that the gauge of the present invention may be employed with various devices, such as a stapler, and/or with variously enabled devices, such as a combustion nail gun, pneumatic stapler, combustion stapler, and the like. Thenail gun 100 including acasing 102 integrally connected with ahandle 104. Thecasing 102 is further connected with anose casting 106. The nose casting 106 is connected with anail loading assembly 108, the nail loading assembly is further connected with ahandle 104. The nail loading assembly provides a nail which is operated upon by thenail gun 100. It is to be understood that the nail loading assembly may be variously configured as contemplated by those of ordinary skill in the art without departing from the scope and spirit of the present invention. A nail driving assembly includes a trigger 110 which is operationally connected, via a driver mechanism, with a driver blade. The driver mechanism provides a force for driving the driver blade through the nose casting 106 in order to drive the nail presented into the nose casting 106 from thenail loading assembly 108. - The
gauge 200 includes agauge housing 202 which may be mounted upon or connected with the nose casting 106. In the current embodiment, thegauge housing 202 further includes amount 204 which allows for the connection of thegauge housing 202 with the nose casting 106. Further, the connection of thegauge 200 with the nose casting 106 is proximal to the end of the nose casting 106 which contacts a work surface, opposite the connection of the nose casting 106 with thecasing 102 of thenail gun 100. It is contemplated that the nose casting 106 may include a mount member which allows for the connection of thegauge 200. Alternatively, the nose casting 106 may include various mounting devices for connecting with thegauge 200. For instance, a first mount device disposed on the nose casting 106 may connect with themount 204 of thegauge 200 and a second mount device disposed on the nose casting 106 may provide a connection with thegauge housing 202 in a secondary location, alternative to the location of themount 204. - The
gauge 200 further includes a sensor assembly which includes aprobe 206 that extends, at least partially, within thegauge housing 202. The probe has afirst end 207 which extends from thegauge housing 202 to the outside environment. Theprobe 206 further includes asecond end 209 which is disposed within thegauge housing 202 and connects with afirst end 211 of aspring 208, thespring 208 being disposed within thegauge housing 202. Thefirst end 207 of theprobe 206 contacts a workpiece for determining at least one structural factor (i.e., hardness, thickness, moisture content) of the workpiece. Thefirst end 211 of thespring 208 connects with theprobe 206 and thesecond end 213 is connected to asensor 210. The sensor assembly provides a measure of a structural factor (i.e., hardness, thickness, moisture content, and the like) of the workpiece for use in determining the operational settings of thenail gun 100 in the current embodiment. The determination of these structural factors allows the nail gun to be adjusted in terms of the force applied in driving the nail within the workpiece. - In operation, the forces encountered by the
first end 207 of theprobe 206 are translated through thesecond end 209 of theprobe 206 to thefirst end 211 of thespring 208. The force exerted upon thespring 208 is translated through thesecond end 213 of the spring to thesensor 210. Thesensor 210, via a connection by alinkage 212 with the nail driving assembly disposed internally within thecasing 102 of the nail gun, translates information regarding the forces encountered by thefirst end 207 of theprobe 206 to the nail driving assembly. - The translated information from the sensor assembly to the nail driving assembly may be utilized for determining the operational settings needed for the proper use of the nail gun or may be utilized for establishing the operational settings of the nail gun. In a pneumatic nail gun the operational settings may be established by setting the size of the driving chamber, thus determining the amount of compressed air, which is to be utilized for the driving of a driver blade of the nail driving assembly. Thus, the present invention, if it determines that the workpiece is relatively hard, may have that information translated through the sensor assembly to the nail driving assembly. The nail driving assembly may then automatically set the compressed air pressure to be utilized. Thus, the user may then fire the nail gun and will be utilizing that amount of force as indicated by the hardness factor determined by the gauge. If the nail gun were a combustion nail gun, the nail driving assembly may automatically set the size of the combustion chamber based on the structural factor information received from the sensor assembly.
- As shown in
FIG. 2 , three variously driven nails “A”, “B”, and “C” are shown. Nail “A” is an underdriven nail, where the nail is shown driven into aworkpiece 260 leaving at least a part of the nail shank exposed (raised above the surface of the workpiece 260) and therefore having a nail head in a position which is not planar with the surface of theworkpiece 260. Nail “B” is an overdriven nail, where the nail is shown driven into theworkpiece 260 with a nail head driven below the planar surface of theworkpiece 260. Nails “A” and “B” are examples of improperly driven nails. In each instance, the nail has been driven to a depth which reduces the effectiveness of the nail in connecting theworkpiece 260 with asecondary workpiece 270. In the case of nail “A”, the nail shank is not being fully utilized for connecting the workpieces, while in the case of nail “B” the nail has weakened the connection by driving through a part of theworkpiece 260. It may be the case that in the operation of a nail gun, such asnail gun 100, due to various structural factors of the workpiece(s) the nails may be underdriven or overdriven because the force settings of the nail driving assembly of the nail gun are not properly set. The force settings may be improperly set for various reasons, including an unawareness of structural factors of the workpiece(s), such as the hardness of the workpiece(s), which may require a higher force setting, and/or the moisture content of the workpiece(s), which may require a lower force setting. Nail “C” is an example of a properly driven nail wherein the nail shank is fully engauged with both theworkpiece 260 and thesecondary workpiece 270 and the nail head is driven to a planar position with the surface of theworkpiece 260. In this example, the force setting of the nail driving assembly of the nail gun was properly set with respect to the structural factors of the workpiece(s). The present invention provides a method and apparatus which assists in providing a pre-determination of structural factors of a workpiece(s) which may then allow the user of a nail gun to establish the proper force settings or allow the nail driving assembly to automatically establish the proper force settings for the nail driving assembly. - Referring now to
FIGS. 4A, 4B and 4C, the engagement of thegauge 200, more particularly theprobe 206 of the sensor assembly, against a workpiece is shown. InFIG. 4A , it is seen that thefirst end 207 of theprobe 206 extends below the plane established by the end of the nose casting 106 which contacts against a workpiece. As theprobe 206 contacts the workpiece it is retracted, in proportion to a structural factor of the workpiece, within thegauge housing 202 applying a force against thespring 208. Thespring 208 is compressed within thegauge housing 202. InFIG. 4B , theprobe 206 is contacted against aworkpiece 415 and theprobe 206 extends a distance “D1” into theworkpiece 415. The depth of penetration of theprobe 206 within theworkpiece 415 provides a force which is translated through theprobe 206 to thespring 208 and ultimately thesensor 210. Thesensor 210 provides information which indicates a specific hardness of the workpiece and or the moisture content of the workpiece based on the translated force. Thesensor 210 then transmits this information via thelinkage 212 to the nail driving assembly where it may be used to set the operational settings of the nail gun. - In
FIG. 4C , theprobe 206 contacts asecond workpiece 420 and penetrates to a second distance “D2”. In the current embodiment, the second distance “D2” corresponds to a greater penetration of theprobe 206 into theworkpiece 420 than is shown by distance “D1”. This greater penetration may indicate numerous structural factors, such as a softer workpiece or a higher moisture content within the workpiece. The compression experienced by thespring 208 may be reduced, due to the greater penetration of theprobe 206, which may result in thesensor 210 receiving a reduced translated force. Thus, thesensor 210, vialinkage 212, may indicate that a reduced driving force is required which may be set by the user or by the nail driving assembly, as previously described. - The distance shown in
FIG. 4A , that theprobe 206 extends below the plane or surface of the end of nose casting 106 may vary as contemplated by those of ordinary skill in the art to provide an optimum sensor reading capability to the sensor assembly. In a preferred embodiment, the distance theprobe 206 extends may be one to two centimeters. It is contemplated however that shorter distances or greater distances may be utilized for the present invention. - The mounting of the
gauge housing 202 to the end of the nose casting 106 is viamount 204. Themount 204 may allow for the connection through the use of various fasteners such as screws, bolts, clips, probe and the like, which will secure the connection of thegauge housing 202 against the nose casting 106. It is contemplated that the nose casting 106 further includes a nose casting mount for connecting with themount 204 of thegauge housing 202. The nose casting mount or the nose casting itself may include receivers, the number of receivers corresponding to the number of fasteners that may be used to mount thegauge housing 202. It is further contemplated that various mechanical connection assemblies or mechanisms may be utilized to connect thegauge housing 202 with the nose casting 106. For example, a snap fit mechanism may be used to mount thegauge housing 202 to the nose casting 106. Alternative mechanisms such as compression lock mechanisms, latch lock mechanisms, and spring loaded lock mechanisms may be utilized for connecting thegauge housing 202 with the nose casting 106. It is further contemplated that thegauge housing 202 may be integrally connected with the nose casting 106. The integral connection may be established utilizing various construction techniques for the nose casting, welding techniques and/or through the use of various adhesives; such as epoxy compounds, cement adhesives, and the like. The integral connection may provide improved structural integrity of the connection between thegauge housing 202 and the nose casting 106. However, it is contemplated that the various connection mechanisms and fasteners may establish the connection of thegauge housing 202 with nose casting 106, in a sufficiently rigid manner enabling the proper operation of the sensor assembly within thegauge housing 202. - The
probe 206 is of a sufficient length to a least partially extend a distance from thegauge housing 202 beneath the plane of the bottom of the nose casting 106. As mentioned previously, the overall length of theprobe 206 may vary to provide for the operation of the sensor assembly. In a preferred embodiment, theprobe 206 is composed of steel. Alternative materials such as composite material, various metals, wood, and the like may be used to construct theprobe 206 of the present invention. - The
spring 208 is a compression spring of a sufficient length to connect with theprobe 206 and thesensor 210. Thespring 208 is a steel compression spring. Alternatively, various metals, composite materials, and the like may be utilized to providespring 208 with various tensile strengths (spring force). These tensile strengths may be utilized for providing theprobe 206 with predetermined resistance factor. The predetermined resistance factor may be set for use based on the various materials with which the nail gun is to be employed. For example, when used primarily for driving nails into framing materials which may comprise a specific type of wood, certain structural hardness factors may be taken into account when selecting the tensile strength of the spring. Therefore, the spring may be preferably optimized for operation with various specific materials. The length of thespring 208 may vary depending on various factors including the size of thegauge housing 202 and the distance between theprobe 206 and thesensor 210. - The
sensor 210 connects with thesecond end 213 of thespring 208 and provides for the determination of the structural factor based on the translated force received via theprobe 206 engaging with a workpiece. In the preferred embodiment, thesensor 210 is a pressure plate, the pressure plate reacting or being activated by pressure exerted upon it through compression of thespring 208 via engagement againstprobe 206. It is contemplated various alternative sensor technologies may be employed without departing from the scope and spirit of the present invention. For instance, thesensor 210 may be a sliding scale device, whereby a sliding member may be moved by the force exerted through thespring 208. The sliding member provides a determination of structural factors based on the position it is placed into by engagement with thespring 208. - The
linkage 212 provides for the communication between thesensor 210 and the nail driving assembly disposed within thecasing 102 of thenail gun 100. The communication including information relating to the measurement of the structural factor of the workpiece as indicated by thesensor 210 readings. The information may be transmitted in various ways as contemplated by those of ordinary skill in the art. For example, the information provided by thesensor 210 may be directly transmitted via a mechanical linkage assembly to the nail driving assembly, wherein the mechanical linkage assembly provides for setting the correct operational force settings of the nail driving assembly. For example, the mechanical linkage may connect with the driving chamber of thepneumatic nail gun 100 and set the size of the driving chamber based on the information received from the sensor assembly. In the alternative, the linkage may be an electrical communication pathway, providing the information to various devices included within thenail gun 100 which allow for the proper force settings of the nail driving assembly to be made. For example, the electrical linkage may connect with a trigger device of the nail gun and control the movement of the trigger device which may translate into control over the amount of compressed air allowed into the driving chamber. It is contemplated that thelinkage 212 may provide a connection utilizing various technologies but allowing for the control of the of the operational settings of the nail gun. - In the example where the linkage provides an electrical communication pathway, the
nail gun 100 may be further disposed with a user interface. The user interface providing a read-out or display of information gathered from thesensor 210 of the sensor assembly. The user interface allowing the user to visually ascertain the readout information and then provide for the adjustment of the operational force settings of the nail driving assembly of thenail gun 100 to proper operational force settings based on the readout information. The adjustments to the operational force settings may be made automatically by a communicative connection between the user interface and the nail driving assembly of the nail gun. In an alternative embodiment, the user interface may simply be a readout display and the user may then take that information and manually adjust the operational force settings of the nail driving assembly of thenail gun 100 based on the readout information. - The
gauge housing 202 may be composed of various materials. In the preferred embodiment, thegauge housing 202 is composed of a steel material. In alternative embodiments gaugehousing 202 may be composed of various composite materials, metals, and the like, which provide sufficient structural integrity and rigidity for proper operation of thegauge 200. It is contemplated that thegauge housing 202 may determine the size of thespring 208 to be utilized by the dimensions of aninterior cavity 203 of thegauge housing 202. For example, a reduced sizeinterior cavity 203 may require the use of a small spring, an increase in the size of theinterior cavity 203 may allow for the use of a larger spring which may provide more play and sensitivity to the sensor assembly. It is contemplated that theinternal cavity 203 may be one long continuous cavity, running the length of the housing. - In the alternative, the
interior cavity 203 may be established as several cavity sections, or multiple cavity sections. These multiple cavity sections may define different internal diameters. These different internal diameters may allow for proper operation of thegauge 200. For example, a first internal cavity section may have a first inner diameter to accommodate thecompression spring 208. A first internal cavity may extend a partial distance down the housing and connect with a second internal cavity. The second internal cavity, being of a sufficient size to allow for the operation of theprobe 206 to partially extend through a second internal cavity and engage with thecompression spring 208 on the one end and then extend to the outside of thegauge housing 202 for engagement of theprobe 206 against the work surface. - It is further contemplated that the
gauge housing 602 may include an indicator assembly for indicating the proper operational settings of thenail gun 100 as determined by the identified structural factors of the workpiece. The indicator assembly may be a display which provides a visually ascertainable readout of information. For example, the indicator assembly may include index markers disposed upon the gauge housing, the index markers indicating an operational setting for the nail gun. The index markers may be visually aligned with the second end of the probe when the probe is contacted against a workpiece, thereby, providing an indication of the proper operational settings for the nail gun with respect to the workpiece. Alternatively, the indicator assembly may be an indexing system whereby a pointer correspondingly identifies one of a series of operational setting parameters which correlates with the determined structural factors. - Referring now to
FIG. 5 , a method of operating thenail gun 100 is illustrated. In a first step, the probe of the sensor assembly is positioned. It is to be understood that the method of operation described herein is equally applicable for the use of various types of devices, such as staple guns, utilizing various operational capabilities, such as a pneumatic gun, combustion gun, and the like. After thefirst step 510, the probe is engaged with the workpiece and instep 520 the depth that the probe extends within the workpiece is indicated. The depth the probe extends into the workpiece providing a measure of a structural factor(s) of the workpiece. Instep 530, the force setting for the nail driver is adjusted to correspond with the information regarding the structural factor(s) of the workpiece. For example, the size of the driving chamber may be adjusted to provide a particular amount of driving force to the driver blade of the nail driving assembly. In afinal step 540, the nail gun is fired and the nail is driven in accordance with the proper operational force settings as determined through use of the probe. - The method of the current invention further contemplates an additional step of the probe depth being indicated by a user interface communicatively linked with the probe. The user interface may provide the capability for making the necessary force setting adjustment for the driving of the nail itself or the user interface may simply provide a readout of the information allowing for the manual adjustment of the force setting by the user.
- In the alternative, a method of operating a power tool is contemplated. In a first step the probe of the sensor assembly of the gauge is positioned for engaging against a workpiece. The power tool being positioned to operate upon the workpiece. With the probe engauged against the workpiece, a probe depth is indicated. The probe depth being a distance the probe penetrates within the workpiece, see
FIGS. 4B and 4C as examples of the penetration of the probe within the workpiece. Utilizing the indicated probe depth, the operational settings of the power tool are determined. The operational settings corresponding to the probe depth, which is an indication of a structural factor of the workpiece. After the proper operational settings are made the power tool is engauged with the workpiece performing its function upon the workpiece. It is further contemplated that various other component features and capabilities may be employed, such as the use of a user interface device, non-contact measurement and alignment system, and the like to assist in making the structural factor determination or increase the ease of use of the present invention, without departing from the scope and spirit of the present invention. - Referring generally now to
FIGS. 6 through 9 , asaw assembly 600 connected with agauge 700 and anon-contact measurement system 800, is shown. Thesaw assembly 600 is a standard miter saw constructed with amotor 602 operatively connected to asaw blade 604. It is contemplated that the saw assembly may vary, such as a sliding miter saw, compound saw, table saw, and the like. Connected to amount mechanism 603 and about thesaw blade 604 is a cover 606 (upper blade guard). Ahandle 608 is connected with themotor 602 andcover 606. Themount mechanism 603 adjustably connects a base 610 with thecover 606,motor 602, and sawblade 604. In the current embodiment, themount 603 includes a first arm connected on a first end with thebase 610 and adjustably connected on a second end with a first end of a second arm. The second end of the second arm being connected with thecover 606. The base 610 further provides a seat for a workpiece to be operated upon by thesaw blade 604. - The
gauge 700 includes agauge housing 702 which connects to thecover 606 via amount 704, a sensor assembly is disposed within thegauge housing 702 and includes aprobe 706 connected to a spring 708. The spring 708 is further connected to a sensor 710. Thegauge 700 is similar in all respects to thegauge 200 described previously, except that themount 704 allows thegauge housing 702 to move, in a sliding manner. Therefore themount 704 allows for the adjusting of the position of thegauge housing 702 relative to thecover 606. Thegauge 700 is disposed upon or connected with thecover 606 in a location which allows the gauge to contact a workpiece when the workpiece is seated upon thebase 610 and allow for thegauge 700 via the sensor assembly to determine at least one structural factor (i.e., hardness, moisture content, and the like) of the workpiece. The structural factor determination providing an indication of the correct operational settings for thesaw assembly 600. The operational settings may include initial saw blade speed, running saw blade speed, cut through saw blade speed, saw blade teeth configuration, size of saw blade, and the like which may assist in increasing the efficiency of cutting performed by thesaw blade 604 of thesaw assembly 600. - As shown in
FIG. 7 , the probe engages against the surface of the workpiece and depending upon the depth of penetration of the probe applies a compressive force to the spring 708. A linkage, similar tolinkage 212 described previously, may be utilized for transmitting data/information from thegauge 700 to thesaw assembly 600. As discussed previously with respect to thenail gun 100, thesaw assembly 600 may further include a user interface which is communicatively coupled via a linkage to thegauge 700. The user interface may provide a readout display of the structural factors detected by the engagement of the probe against the workpiece. - It is further contemplated that the
gauge housing 702 may include an indicator assembly for indicating the proper operational settings of thesaw assembly 600 as determined by the identified structural factors of the workpiece. The indicator assembly may be a display which provides a visually ascertainable readout of information. Alternatively, the indicator assembly may be an indexing system whereby a pointer correspondingly identifies one of a series of operational setting parameters which correlates with the determined structural factors. - As seen in
FIG. 8 and 9, thegauge housing 702 including the sensor assembly may engauge with a workpiece to determine at least one structural factor and then be slidably repositioned to avoid contact by the sensor assembly with the workpiece as the workpiece is being cut bysaw blade 604. This may reduce the risk of any inadvertenct contact occurring to thegauge 700 during operation of thesaw assembly 600. It is contemplated that various mechanical connection mechanisms may be employed to provide the adjustable connection of thegauge 700 with thesaw assembly 600. For example, a rack and pinion system, including an adjustment knob connected to the pinion for engaugement by a user, may be utilized. In operation, the rotation of the adjustment knob by the user may cause the pinion to travel along the rack. The direction of travel may be determined by the user through the direction of rotation applied to the adjustment knob. - Alternatively, the adjustment of the
gauge housing 702 along themount 704 may occur automatically. For instance, a user interface device may be communicatively linked with thegauge 700 including a powered mechanical adjustment system. The user may select the type of adjustment to be made upon the user interface. The adjustment command may then be transmitted to the powered mechanical adjustment system causing the powered mechanical adjustment system to execute the command. It is contemplated that various commands and power mechanical adjustment systems may be employed to provide an automatic adjustment capability to thegauge 700. - A non contact measurement and
alignment system 800 includes ahousing 802 mounted to thecover 606. In the alternative thehousing 802 may be connected in various locations about thesaw assembly 600. For example, thehousing 802 may be positioned in various locations about thecover 606. Alternatively, thehousing 802 may be mounted in various locations upon the saw assembly or thehousing 802 may be remotely mounted from the saw assembly. Disposed within thehousing 802 is a laser source, i.e. a laser generator. The laser source emitting alaser beam 806 through the lens to an environment outside of thehousing 802. The non contact measurement andalignment system 800 further includes a detector which detects the striking of an incident laser beam emitted from the laser source, off various surfaces. The detector may detect laser light being reflected back from surfaces such as the base 610 or from a workpiece seated upon thebase 610. It is contemplated that the detector is capable of detecting minute amounts of electromagnetic radiation from a laser beam. - Referring to
FIG. 10 , a method of operating a saw assembly, such as thesaw assembly 600, is provided. In a first step 1005 a distance to a work surface is established. This measurement is provided as a function of the distance from the non-contact measurement andalignment system 800 to the seating surface provided by thebase 610. In operation thelaser beam 806 is emitted and strikes thebase 610. Thelaser beam 806 is reflected from thebase 610 and at least a portion of that reflected light is detected by the detector. After that distance is established instep 1010, a workpiece is inserted or seated upon the base 610 in a position to be operated upon by thesaw blade 604. Instep 1015, the distance to the workpiece is established utilizing a non contact measurement system. Thelaser beam 806 is emitted and provides a distance reading with respect to the workpiece seated upon thebase 610. Instep 1020, the thickness of the workpiece is determined by taking the original distance from the non contact measurement andalignment system 800 to the work surface and subtracting the second distance, which is the distance from the non contact measurement andalignment system 800 to the workpiece when placed upon thebase 610 of thesaw assembly 600. - In
step 1025, the gauge is employed to determine at least one structural factor of the workpiece. For instance, the gauge may determine the hardness of the workpiece or moisture content of the workpiece. Instep 1030, the hardness or moisture is determined. Instep 1035, the saw blade speed is determined based on the determined structural factor, the hardness or moisture of the workpiece. Instep 1040, the descent of the saw blade is begun in preparation for the cutting operation. Instep 1045, the blade speed is adjusted prior to the cut through which may assist in increasing the useful lifespan of the saw blade. Instep 1050, the cut is completed, then instep 1055, the saw blade is returned to its index/home position. - It is understood that the specific order or hierarchy of steps in the methods disclosed are examples of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the method can be rearranged while remaining within the scope and spirit of the present invention. The accompanying method claims present elements of the various steps in a sample order, and are not necessarily meant to be limited to the specific order or hierarchy presented.
- It is believed that the present invention and many of its attendant advantages will be understood by the forgoing description. It is also believed that it will be apparent that various changes may be made in the form, construction and arrangement of the components thereof without departing from the scope and spirit of the invention or without sacrificing all of its material advantages. The form herein before described being merely an explanatory embodiment thereof. It is the intention of the following claims to encompass and include such changes.
Claims (20)
1. A powered fastening device, comprising:
a nosepiece having a first end and a second end, and defining a channel;
a housing coupled to the first end of the nosepiece;
a handle and a trigger coupled to the housing;
a fastener driving assembly disposed at least partially within the housing, the nail driving assembly including a driver blade which is driven into the channel from the housing through the first end to the second end of the nose, to drive a fastener out the second end of the nosepiece and into a workpiece;
a fastener loading assembly connected with the nosepiece, the fastener loading assembly configured to provide the fastener to the channel of the nosepiece; and
a sensor assembly coupled to at least one of the nosepiece and the housing, the sensor assembly including a probe for engaging the workpiece,
wherein the probe is configured to determine a measure of a structural factor of the workpiece for use in determining an operational setting of the powered fastening device.
2. The powered fastening device of claim 1 , wherein the probe is configured to determine the measure of the structural factor prior to application of the second end of the nosepiece to the workpiece.
3. The powered fastening device of claim 1 , wherein the probe is configured to penetrate the workpiece to determine the measure of the structural factor of the workpiece.
4. The powered fastening device of claim 1 , wherein the sensor assembly further comprises:
a spring connected to the probe;
a sensor connected to the spring; and
a linkage connected to the sensor.
5. The powered fastening device of claim 1 , further comprising a user interface communicatively coupled with the sensor assembly.
6. The powered fastening device of claim 1 , further comprising a non-contact measurement and alignment system connected to the housing.
7. The powered fastening device of claim 1 , wherein the measure of the structural parameter is used to adjust an operational setting of the tool.
8. The powered fastening device of claim 1 , further comprising an adjustment system coupled to the sensor assembly and configured to adjust an operational setting of the tool in response to the measure of the structural parameter.
9. The powered fastening device of claim 1 , wherein the structural factor comprises hardness.
10. The powered fastening device of claim 1 , wherein the structural factor comprises thickness.
11. The powered fastening device of claim 1 , wherein the structural factor comprises moisture content.
12. The powered fastening device of claim 1 , wherein the operational setting comprises a driving depth of the fastener.
13. A gauge, for use with a power tool engaging a workpiece, comprising:
a housing connected to the power tool;
a sensor assembly disposed in the housing, the sensor assembly including a probe extending from the housing,
wherein the probe is configured to penetrate the workpiece to determine a measure of a structural factor of the workpiece for use in determining an operational setting of the power tool.
14. The gauge of claim 13 , the sensor assembly further comprising:
a spring connected to the probe;
a sensor connected to the spring; and
a linkage connected to the sensor.
15. The gauge of claim 13 , further comprising a mount which connects the housing with the power tool.
16. The gauge of claim 13 , wherein the housing is removable from the power tool.
17. The gauge of claim 13 , further comprising a user interface for providing a readout of information.
18. The gauge of claim 13 , further comprising an adjustment system coupled to the sensor assembly and configured to adjust an operational setting of the tool in response to the measure of the structural parameter.
19. The gauge of claim 13 , wherein the structural factor comprises at least one of hardness, thickness, and moisture content.
20. The gauge of claim 13 , wherein the gauge is configured for use with a powered fastening device.
Priority Applications (1)
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US11/810,484 US20070295777A1 (en) | 2004-10-06 | 2007-06-06 | Gauge for use with power tools |
Applications Claiming Priority (2)
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Also Published As
Publication number | Publication date |
---|---|
ATE380633T1 (en) | 2007-12-15 |
PL1645371T3 (en) | 2008-05-30 |
EP1645371B1 (en) | 2007-12-12 |
EP1645371A1 (en) | 2006-04-12 |
US7243440B2 (en) | 2007-07-17 |
DE602005003740T2 (en) | 2008-11-27 |
US20060112580A1 (en) | 2006-06-01 |
ES2296037T3 (en) | 2008-04-16 |
DK1645371T3 (en) | 2008-05-05 |
DE602005003740D1 (en) | 2008-01-24 |
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