CN1447737A - Rapid set guard system for radial arm saw - Google Patents
Rapid set guard system for radial arm saw Download PDFInfo
- Publication number
- CN1447737A CN1447737A CN 01814561 CN01814561A CN1447737A CN 1447737 A CN1447737 A CN 1447737A CN 01814561 CN01814561 CN 01814561 CN 01814561 A CN01814561 A CN 01814561A CN 1447737 A CN1447737 A CN 1447737A
- Authority
- CN
- China
- Prior art keywords
- protection system
- hand saver
- workpiece
- protective cover
- spare
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/16—Saw benches
- B27B5/18—Saw benches with feedable circular saw blade, e.g. arranged on a carriage
- B27B5/20—Saw benches with feedable circular saw blade, e.g. arranged on a carriage the saw blade being adjustable according to depth or angle of cut; Radial saws, i.e. sawing machines with a pivoted radial arm for guiding the movable carriage
- B27B5/201—Radial sawing machines; Machines having a saw blade on an extendable radial arm
-
- 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
- B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
- B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A quick set guard system for a radial saw having an arcuately-shaped hand guard attachable to outfeed end of the stationary upper protective shield covering the saw blade. The hand guard has a pawl arm to which are mounted a pair of anti-kickback pawl. The location of the anti-kickback pawl relative to the hand guard is selected such when the hand guard is positioned a selected distance from a workpiece, the location of the anti-kickback pawls are automatically set. The guard system also includes riving knife attachable to the hand guard. The hand guard and riving knife are independently adjustable relative to the upper surface of the workpiece.
Description
Technical field
The present invention relates to line-bar resaw, particularly when cutting the position, be arranged on the protection system of saw blade exit side when saw blade.
Background technology
General line-bar resaw comprises the circular saw that is installed on the spiral arm, and spiral arm is suspended on the workbench top.Spiral arm is the cantilever that stretches out from the post that is connected the workbench rear end.Line-bar resaw can and cut the saw position operation under the jack saw pattern, and circular saw moves around and cutting the position half-twist of position circular saw from jack saw along the length of spiral arm under the jack saw pattern.Cutting the position, circular saw keeps static and workpiece manually is sent in the saw blade by the operator.
Because saw may operate in the pattern of at least two kinds of different positions and saw, may cause different problems owing to use inadequately.In order to fully understand the problem that cutting causes that cuts, it is very important understanding the characteristic that cuts operation.Cut cutting and generally include the width that changes slender piece.The cutting of being carried out in cutting operation under the normal condition is the texture that is parallel to workpiece.Workpiece is parallel to cuts backplate and be sent in the saw blade that motor drives, and will cut backplate and be set in from the required distance of saw blade.Cut backplate guiding as workpiece when work piece cut.
The problem relevant with cutting cutting operation comprises the blade that discharge zone exposes, the feed of recoil and wrong way.If the operator is opposite with the operation indication of manufacturer, in cutting cutting, go to the back of saw blade, and attempt to guide, clamp or spur the saw blade that workpiece passes through rotation, the saw blade of rotation may be got back to pulling of workpiece and operator in the saw blade to accident.Therefore, discharge end contact or the pulling workpiece at saw may cause the operator injured when blade rotates all the time.
Clamped or can recoil when clamping in workpiece when saw blade.This may cause workpiece pushed to or springs back over the operator on one's body and even whole work-piece may be thrown to the operator, if the operator just in time stands on the straight line consistent with the direction of charging.When the feed mode that operator attempt just makes a mistake when the discharge end of saw blade is sent to workpiece the saw, the rotation of saw blade can promptly be pulled into workpiece in the blade of saw.Because this result who promptly spurs workpiece of saw blade who rotates.The operator also may be pulled to the saw blade of rotation.
At present, the manufacturer of line-bar resaw has developed the protection system of blade so that reduce because the injury to the operator that maloperation caused of saw.The example of such hand protection system by Metzge Jr in United States Patent (USP) 5,287,779; 5,287,780 and 5,353, propose in No. 670.The present invention is the protection system of setting fast, and it operationally protects the operator, makes the operator avoid his own careless, recoil and attempt in the mode of mistake workpiece to be sent in the saw blade.
Summary of the invention
The present invention is the protection system that line-bar resaw is set when being used to cut the cutting operation pattern fast.Protection system comprises hand saver spare, and it has the profile of arc, and this profile is complementary with the profile of the static last protective cover of the saw blade first half that covers the motor driving.Hand saver spare has the cross section of " U " shape, and it goes up and prevent that across this cover the saw blade that operator's hand rotates from contacting along the length of last protective cover below last protective cover.By lock-button hand saver spare is installed on the protective cover, passes the lock-button of groove admittance longitudinally, this groove allows hand saver spare to move up and down along the relative workpiece in the neighboring of last protective cover.Hand saver spare also has the pawl arm, and a pair of recoil pawl is installed in this pawl arm.Locate the recoil pawl like this by the pawl arm, the substrate that makes hand saver spare at the upper surface of wanting cut workpiece or slightly in the above.The position of anti-recoil pawl is automatically with appropriate given.Chopper can be connected to hand saver spare by identical lock-button, this button is locked in hand saver spare on the upper shield that covers the saw blade first half.Pass the groove that is arranged on the chopper and admit lock-button, the relative workpiece of this button is independent adjustable.
An object of the present invention is a kind of protection system of line-bar resaw, this system is easy to set when saw is arranged to cut cutting operation.
Another object of the present invention is a kind of protection system, and along with the setting of the relative workpiece of protection system, automatic setting resists the recoil pawl in this system.
A further object of the invention is a kind of protection system that can be fit to existing line-bar resaw and need not to revise.
It is to be independent of the ability that anti-recoil pawl is set chopper that the present invention also has another purpose.
A further object of the invention is that anti-recoil pawl prevents that workpiece from sending in the saw blade in the mode of mistake.
Another object of the present invention is a kind of protection system, and it is placed on the discharge end of saw and causes injury to operator's hand and finger so that there are enough width to prevent because the saw blade that rotates is placed on discharge zone inadequately.
To make these and other purpose of the present invention become clearer by read this specification with accompanying drawing.
Description of drawings
Fig. 1 is the perspective view that the line-bar resaw of quick setting protection system is housed.
Fig. 2 is the exploded view of protection system.
Fig. 3 is the profile of hand saver spare.
Fig. 4 is expression hand saver spare and the part perspective view that resists recoil pawl position when relative workpiece is set.
The specific embodiment
Fig. 1 represents to be equipped with the details according to the line-bar resaw of quick setting protection system of the present invention.Line-bar resaw comprises workbench 10.On platform, hang electrically driven (operated) annular saw device 12.Hang saw device 12 on spiral arm 14, this arm is supported by the vertical column 16 that is usually located at the workbench back.Can regulate the height of saw device 12 on workbench 10 by hand crank 18 in the mode of routine.
The Lower Half of saw blade 22 is covered by lower shield 26 in the one side at least, and this lower shield 26 is pivotally connected to upper shield 24.When workpiece being sent into when saw by lower shield 26 being moved with wanting contacting of cut workpiece.
In addition with reference to figure 2, be connected to the last protective cover 24 of contiguous discharge end according to hand protection system 30 of the present invention by locking group 28, this group by receive threaded in threaded hole.In many line-bar resaws of selling in the market, lock-button 28 has been arranged and chopper has been locked onto protective cover with it.Comprise hand saver spare 32 and chopper 34 as hand protection system 30 more clearly representing among Fig. 2.One antagonism recoil pawl 36 and 38 is pivotally connected to pawl arm 40, and this arm is connected to hand saver spare 32 or in aggregates with it.Hand saver spare 32 has the profile of arc, and the radially profile of this profile and last protective cover 24 is complementary and elongated groove 42 is arranged, and admits lock-button 28 by this groove.Chopper 34 also has installation bracket 44, and this carriage has corresponding elongated slot 46.Lock-button 28 is also passed groove 46 and chopper 46 is fixed to hand saver spare 32.
With reference now to Fig. 2 and 3.The details of expression hand saver spare 32 and chopper 34 among the figure.Hand saver spare 32 is rounded trenches parts 48, and the profile of its radius of curvature and last protective cover 24 is complementary.Best, promote winglet 50 at groove component 48 with upper end installing and lift or fall hand saver spare 32 so that help relative workpiece.The upper end 52 of pawl arm 40 is fixedly attached to groove component 48 and there is extension 54 its lower end, by extension installing pawl installing hole 56.To resist recoil pawl 36 and 38 to be pivotally connected to the pawl arm by rotational pin or the bolt 57 that is received in the pawl installing hole 56. Anti-recoil pawl 36 and 38 is installed in such position of pawl arm 40 terminals, makes to locate rightly when the substrate 58 of groove component 48 is being wanted on the surface of cut workpiece slightly to resist the pawl 36 and 38 that recoils, and makes it engage and prevent that it from springing back in the saw blade with workpiece.
The installation of the more detailed expression protection system of Fig. 4 on protective cover on the line-bar resaw 24.As shown in the profile of Fig. 3, the both sides 60 of groove component 48 and 62 sides across the last protective cover 24 shown in the dotted line.
Finish very easily the location of protection system.The operator only need unclamp button 28 and decline hand saver spare 32 surface up to substrate 58 contact workpieces.The operator lifts hand saver spare 32 a little then, and about 1/8 inch (3mm) or littler, this just allows workpiece to be free to slide for 58 times in the substrate of hand saver spare 32.The such location of hand saver spare 32 relative workpiece just automatically makes anti-recoil pawl locate on surface of the work, so that allow workpiece in a direction, promptly the direction of feed moves and stops its motion in the opposite direction simultaneously.After with hand saver spare location, the location chopper is inserted among the saw kerf, then by tightening lock-button 28 two is locked on the position.It is clamped that chopper helps to reduce in cutting the saw blade that the distortion owing to timber causes.
As mentioned above, hand saver spare 32 helps to prevent that operator's hand from contacting with the saw blade of rotation.Also have, automatically set anti-recoil pawl along with the setting of hand saver spare.At last, as shown in Figure 5, when setting hand saver spare, anti-recoil pawl stops workpiece to be inserted into workpiece in the saw on the direction of mistake and prevents recoil.
One of advantage of protection system is, it can be retrofitted in many existing line-bar resaws and need not to revise or only have minimum change, because many existing line-bar resaws have been useful on the lock-button 28 of clamping chopper.Therefore, can be encased in new line-bar resaw or ration so that upgrade and improve the security of existing line-bar resaw setting protection system fast as kit.
Although have illustrated and described various embodiments of the present invention, do not plan to make these embodiment explanations and describe all possible forms of the invention.Therefore, employed vocabulary is illustrative word rather than restrictive in specification, should be appreciated that can carry out various changes and can not deviate from aim of the present invention and category.
Claims (12)
1. quick setting protection system that is used for line-bar resaw, this line-bar resaw have the static protective cover of going up of the first half of the saw blade that a covering motor drives at least, and this system comprises:
Hand saver spare, it have upper end, base terminal and with the arcuate profile of last protective cover outline;
The pawl arm, it has an end of the upper end that is connected to hand saver spare and the lower end of contiguous substrate;
Be connected an antagonism recoil pawl of pawl arm lower end, its position be chosen to when the upper surface interval of the substrate of hand saver spare and workpiece selected apart from the time can be rightly and the surface engagement of workpiece; With
The contiguous saw blade discharge end of hand saver spare is fixed to the mechanism of protective cover.
2. quick setting protection system as claimed in claim 1 is characterized in that hand saver spare has " U " shape cross section, and " U " shape cross section has the parallel sides part of the side of stepping up protective cover.
3. quick setting protection system as claimed in claim 1; it is characterized in that described fixed mechanism comprises cannelure that is arranged on the hand saver spare and the lock-button of admitting by cannelure; so that the discharge end of contiguous saw blade locks onto static protective cover with hand saver spare; cannelure allows the relative protective cover of hand saver spare to slide and does not depend on that the thickness of workpiece locks onto protective cover with hand saver spare, and makes substrate selected distance of spacing on the upper surface of workpiece of hand saver spare.
4. quick setting protection system as claimed in claim 1 is characterized in that the selected distance on the upper surface of workpiece is approximately 3mm or littler.
5. quick setting protection system as claimed in claim 3 also comprises the chopper that can be connected to hand saver spare.
6. quick setting protection system as claimed in claim 5 is characterized in that chopper has installation bracket, and this carriage has elongated groove, thereby admits lock-button to allow relative workpiece location-independent chopper by this groove.
7. quick setting protection system that is used for line-bar resaw, this line-bar resaw have the static lock-button that goes up protective cover and can be connected to protective cover of the first half that covers the saw blade that motor drives at least, and this protection system comprises:
Hand saver spare, it has arcuate profile, upper end, substrate and cannelure with the protective cover outline, can admit lock-button so that hand saver spare is locked onto protective cover by this groove,
The pawl arm, it has an end of the upper end that is connected to hand saver spare and the lower end of contiguous substrate; With
Be connected to an antagonism recoil pawl of pawl arm, its position be chosen to when the upper surface interval of the substrate of hand saver spare and workpiece selected apart from the time can be rightly and the surface engagement of workpiece.
8. quick setting protection system as claimed in claim 7 is characterized in that hand saver spare has " U " shape cross section, and " U " shape cross section has the parallel sides of the side of stepping up protective cover.
9. quick setting protection system as claimed in claim 7, the selected distance that it is characterized in that the substrate on workpiece surface is 3mm or littler.
10. quick setting protection system as claimed in claim 7 also comprises the chopper that can be connected to hand saver spare by lock-button.
11. quick setting protection system as claimed in claim 10 is characterized in that chopper has installation bracket, this carriage has elongated groove, admits lock-button so that chopper is locked onto hand saver spare by this groove.
12. quick setting protection system as claimed in claim 7 is characterized in that the pawl arm becomes whole with hand saver spare.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59928100A | 2000-06-22 | 2000-06-22 | |
| US09/599,281 | 2000-06-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1447737A true CN1447737A (en) | 2003-10-08 |
| CN1239301C CN1239301C (en) | 2006-02-01 |
Family
ID=24398987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01814561 Expired - Fee Related CN1239301C (en) | 2000-06-22 | 2001-06-21 | Rapid set guard system for radial arm saw |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1239301C (en) |
| AU (1) | AU2001281284A1 (en) |
| CA (1) | CA2411920A1 (en) |
| WO (1) | WO2001098043A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2416328B (en) * | 2002-10-01 | 2006-08-23 | Milwaukee Electric Tool Corp | Saw |
| US20040060178A1 (en) * | 2002-10-01 | 2004-04-01 | Mark Willer | Circular saw |
| US8424434B2 (en) * | 2009-04-28 | 2013-04-23 | Robert Bosch Gmbh | Universal fence for a power table saw |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926709A (en) * | 1957-03-11 | 1960-03-01 | American Mach & Foundry | Guard for rotary power cutter |
| DE1814062A1 (en) * | 1967-12-12 | 1969-10-23 | Inst Cercetari Stiintifice | Protection device for circular saws |
| US4150598A (en) * | 1977-12-12 | 1979-04-24 | Rockwell International Corporation | Radial arm saw guard |
| US4532841A (en) * | 1982-03-10 | 1985-08-06 | Emerson Electric Co. | Saw blade guard |
| US4576073A (en) * | 1983-07-01 | 1986-03-18 | Stinson Robert J | Saw blade guard |
| US4892022A (en) * | 1988-09-20 | 1990-01-09 | Robert Bosch Power Tool Corporation | Safety guard for sawing power tool particularly mitre saw |
| US5353670A (en) * | 1993-03-15 | 1994-10-11 | Emerson Electric Co. | Independently and jointly operable radial saw guards |
| US5287779A (en) * | 1993-03-15 | 1994-02-22 | Emerson Electric Co. | Radial saw safety guards and barriers |
| US5287780A (en) * | 1993-03-15 | 1994-02-22 | Emerson Electric Co. | Radial arm saw guard with operational interlock |
| US5918521A (en) * | 1994-11-11 | 1999-07-06 | Sartori; James A. | Bifurcated holdown shoe for radial arm saws |
| US5918522A (en) * | 1996-06-28 | 1999-07-06 | Benedict Engineering Company, Inc. | Radial arm saw blade guard |
| DE19630022B4 (en) * | 1996-07-25 | 2007-12-20 | Fa. Andreas Stihl | Hand-guided implement with a protective cover |
| US5950514A (en) * | 1997-02-28 | 1999-09-14 | Benedict Engineering Company | Miter saw blade guards |
-
2001
- 2001-06-21 AU AU2001281284A patent/AU2001281284A1/en not_active Abandoned
- 2001-06-21 CA CA002411920A patent/CA2411920A1/en not_active Abandoned
- 2001-06-21 WO PCT/US2001/041109 patent/WO2001098043A1/en active Application Filing
- 2001-06-21 CN CN 01814561 patent/CN1239301C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001281284A1 (en) | 2002-01-02 |
| CN1239301C (en) | 2006-02-01 |
| CA2411920A1 (en) | 2001-12-27 |
| WO2001098043A1 (en) | 2001-12-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |