HK1259205B - Saw apparatus - Google Patents

Description

sawing equipment

Cross-references to related applications

This application claims priority to U.S. Provisional Patent Application Serial No. 62/212,372, filed August 31, 2015, entitled “CIRCULAR SAW APPARATUS WITHINTEGRATED MULTISTAGE FILTRATION SYSTEM”, the entire contents of which are incorporated herein by reference.

Technical Field

This disclosure relates generally to dust collection, and more specifically to promoting dust collection within a circular saw apparatus via a multi-stage filtration system.

Background Technology

When using conventional power saws, the release of airborne dust and particulate matter from cutting workpieces is problematic. The health hazards associated with inhaling this dust are particularly concerning. The development of wet cutting devices is one solution to reduce dust, where water is applied to the cutting edge of the blade, where dust is entrained in the fluid and directed to the holding area. While most wet cutting methods work fairly well, they generate additional problems such as wastewater pollution and environmental concerns. For example, conventional masonry and tile saws typically have a water basin or dish with a pump that supplies water to the cutting head. When the saw cuts, water is sprayed and dispersed around the cutting area. Therefore, because this water can drip, spray, and potentially spill, the power saw cannot be placed close to the actual masonry and/or tile installation location. Consequently, users spend a significant amount of time walking back and forth between the power saw and the installation area.

Therefore, a dry-operated power saw that prevents dust from escaping into the environment is desired. In this regard, it should be noted that the aforementioned drawbacks are intended only to provide an overview of some problems with conventional systems and are not intended to be exhaustive. Other problems with the prior art, as well as the corresponding benefits of some embodiments in various non-limiting implementations, may become more apparent upon review of the following detailed description.

Summary of the Invention

The simplified summary of the invention provided herein is intended to aid in a basic or general understanding of the various aspects of the exemplary, non-limiting embodiments followed in the more detailed description and accompanying drawings. However, this summary is not intended as a broad or exhaustive overview. Rather, the sole purpose of this summary is to present, in a simplified form, some concepts associated with certain exemplary, non-limiting embodiments as a prelude to a more detailed description of the various embodiments described below.

Various non-limiting aspects are described in conjunction with a dust collection system according to one or more embodiments and corresponding disclosures. In one such aspect, a device for promoting dust collection is disclosed. In such an embodiment, the device includes a vacuum source, a circular saw blade, and a worktable including a central groove aligned axially with the circular saw blade. Here, the central groove includes an airflow channel adjacent to the intended contact point between the circular saw blade and the workpiece. The vacuum source is then configured to provide a gathering negative pressure below the worktable via the airflow channel.

In another embodiment, a different device for promoting dust collection is disclosed. In this embodiment, the device includes a housing comprising a vacuum source and a multi-stage filter. The device further includes a circular saw blade and a worktable including a central groove aligned axially with the circular saw blade. Here, the vacuum source is configured to provide a negative pressure below the worktable at the central groove, and the multi-stage filter is configured to collect dust from the air drawn in by the negative pressure from an area near the central groove.

In another aspect, a device for promoting dust collection is disclosed, the device comprising a vacuum source, a circular saw blade, and a worktable. In this embodiment, the worktable includes a central groove axially aligned with the circular saw blade, and the vacuum source is configured to provide a first negative pressure at the central groove below the worktable. The vacuum source is then further configured to provide a second negative pressure via an auxiliary port.

Other implementation methods and various non-limiting examples, scenarios and implementations are described in more detail below.

Attached Figure Description

Various non-limiting embodiments are further described with reference to the accompanying drawings, in which:

Figure 1 is a block diagram of an exemplary device for promoting the removal of airborne dust via a multi-stage filtration system according to one aspect of this specification;

Figure 2 is a schematic first view of an exemplary device having an integrated multi-stage filtration system according to one aspect of this specification;

Figure 3 is a schematic second view of an exemplary device having an integrated multi-stage filtration system according to one aspect of this specification;

Figure 4 is a schematic first view of an exemplary device having an integrated multi-stage filtration system and a blade guard vacuum inlet according to one aspect of this specification;

Figure 5 is a schematic second view of an exemplary device having an integrated multi-stage filtration system and a blade guard vacuum inlet according to one aspect of this specification;

Figure 6 is a schematic third view of an exemplary device having an integrated multi-stage filtration system and a blade guard vacuum inlet according to one aspect of this specification;

Figures 7 to 9 illustrate exemplary use over time of a device having an integrated multi-stage filtration system according to one aspect of this specification;

Figure 10 illustrates a first view of an exemplary dust path within a device having an integrated multi-stage filtration system according to one aspect of this specification;

Figure 11 illustrates a second view of an exemplary dust path within a device having an integrated multi-stage filtration system according to one aspect of this specification;

Figure 12 is a schematic first view of an exemplary device having an integrated extension according to one aspect of this specification;

Figure 13 is a schematic second view of an exemplary device having an integrated extension according to one aspect of this specification;

Figure 14 is a schematic first view of an exemplary cutting saw construction according to one aspect of this specification;

Figure 15 is a schematic second view of an exemplary cutting saw construction according to one aspect of this specification;

Figure 16 is a schematic first view of an exemplary table saw construction according to one aspect of this specification; and

Figure 17 is a schematic second view of an exemplary table saw construction according to one aspect of this specification;

Figure 18 is a side view of an exemplary device for promoting blade cooling according to one aspect of this specification;

Figure 19 is a top view of an exemplary device for promoting blade cooling according to one aspect of this specification;

Figure 20 is a side view of an exemplary device with louvers that promotes blade cooling according to one aspect of this specification;

Figure 21 illustrates various aspects of an exemplary louver insert according to one aspect of this specification;

Figure 22 is a schematic diagram of an exemplary blade stabilizer according to one aspect of this specification;

Figure 23 is a schematic diagram of an exemplary dust tray according to one aspect of this specification;

Figure 24 is a schematic diagram of an unsealed exemplary dust bag on a dust tray according to one aspect of this specification;

Figure 25 is a side view of an unsealed exemplary dust bag on a dust tray according to one aspect of this specification;

Figure 26 is a schematic diagram of an exemplary closed dust bag on a dust tray according to one aspect of this specification;

Figure 27 is a schematic diagram of an exemplary removable dust tray inserted into a device having an unsealed dust bag, according to one aspect of this specification;

Figure 28 is a schematic diagram of an exemplary removable dust tray inserted into a closed dust encapsulation bag according to one aspect of this specification;

Figure 29 is a schematic diagram of an exemplary removable dust tray removed from the device according to one aspect of this specification; and

Figure 30 is a schematic diagram of an exemplary transfer path of dust from a blade guard according to one aspect of this specification.

Detailed Implementation

Overview

The various embodiments disclosed herein relate to dust collection within a circular saw apparatus via a multi-stage filtration system. Figure 1 provides a block diagram of an exemplary apparatus with an integrated multi-stage filtration system according to one aspect of this specification. As shown, apparatus 100 includes a housing 110, a workbench 120, and a circular saw blade 130, wherein the housing 110 further includes a vacuum source 112 and a multi-stage filter 114. As will be discussed in more detail below with reference to the remaining figures, it is contemplated that the workbench 120 will include a central groove aligned axially with the circular saw blade 130. During use, the vacuum source 112 is then configured to provide negative pressure below the workbench 120 at the central groove, while the multi-stage filter 114 is configured to collect dust from the air drawn in by the negative pressure near the area of the central groove.

Various configurations of the device 100 are envisioned and disclosed herein. For example, in a first envisioned configuration, the worktable 120 is configured to slide above the housing 110 (see, for example, Figures 2 through 10). For this particular embodiment, in addition to providing negative pressure below the worktable 120 at the central groove, the vacuum source 112 also provides negative pressure in the region within the blade guard of the circular saw blade 130. Here, as shown, the multi-stage filter 114 is thus configured to collect dust from the air drawn in from within the blade guard of the circular saw blade 130, in addition to dust near the central groove of the worktable 120.

A cutting saw configuration for device 100 is also envisioned (see, for example, Figures 14 and 15). In this embodiment, the worktable 120 is fixed and the circular saw blade 130 is coupled to a rotatable arm. During use, the rotatable arm is lowered onto the workpiece, where dust near the central groove of the worktable 120 is drawn back towards the multi-stage filter 114 by the negative pressure provided by the vacuum source 112.

In another aspect of this disclosure, a table saw configuration is also envisioned (see, for example, Figures 16 and 17). In such an embodiment, the circular saw blade 130 protrudes from the housing 110 and passes through the central groove of the worktable 120. During use, the workpiece is pushed against the circular saw blade 130, wherein dust near the central groove of the worktable 120 is drawn back towards the multi-stage filter 114 by the negative pressure provided by the vacuum source 112.

Exemplary sliding table implementation

Exemplary embodiments of the disclosed sawing apparatus with a sliding worktable will now be discussed in further detail. Figures 2 and 3, for example, provide a first and a second schematic diagram of such an apparatus according to one aspect of this disclosure, respectively. As shown, the sawing apparatus 200 includes a circular saw blade 230 and a housing 210 coupled to a worktable 220, wherein the worktable 220 is configured to slide over the housing 210 via a track 222. In this embodiment, as shown, the worktable 220 is separated from each other by a plurality of louvers 224 strategically spaced apart from each other within a central groove 226 aligned axially with the circular saw blade 230. Furthermore, the circular saw blade 230 is driven by a saw motor 234 and is securely fixed to the housing 210 via an arm 236. For safety, a blade guard 232 may also be included.

Regarding housing 210, it is conceivable that it may include a multi-stage filter. Here, for example, such a multi-stage filter may include a rotatable filter 217 coupled to a cyclone filter 216. A vacuum source 212 attached to the rotatable filter 217 is then configured to generate an airflow passing through the rotatable filter 217 and the cyclone filter 216. During use, as the worktable 220 slides over housing 210, this airflow provides negative pressure directly below the central slot 226, where dust near the central slot 226 is drawn towards the filter via louvers 224 and subsequently collected in dust container 213.

In one aspect of this disclosure, it should be noted that if the louvers 224 are blocked, the suction force below the center groove 226 may be reduced. In fact, if a large number of the louvers 224 are blocked (e.g., by large workpieces), such blockage may result in insufficient suction force for collecting dust. As a result, dust will undesirably remain above the worktable 220 instead of being sucked up below the center groove 226.

To avoid this problem, the configuration shown in Figures 4 through 6 is envisioned, in which the airflow generated by the vacuum source 212 is further extended into the region within the blade guard 232. Specifically, one end of the conduit 235 is inserted into the vacuum inlet 233 of the blade guard 232, while the other end of the conduit 235 is connected to the vacuum port 228 on the housing 210. In this embodiment, if the amount of suction below the central slot 226 is insufficient, dust is drawn upwards from within the blade guard 232 towards the vacuum inlet 233, then travels from there through the conduit 235 and subsequently through the filter within the housing 210.

Referring next to Figures 7 through 9, an exemplary use of the device 200 according to one aspect of this specification is provided over time. Specifically, Figure 7 shows a cross-section of the device 200 at t = _t0 , Figure 8 shows a cross-section of the device 200 at t = _t1 , and Figure 9 shows a cross-section of the device 200 at t = _t2 , where _t0 < _t1 < _t2 . As shown, at t = _t0 , the block 270 is placed on the worktable 220 away from the circular saw blade 230. At t = _t1 , the worktable 220 is moved toward the circular saw blade 230, which generates dust as the block 270 comes into contact with the circular saw blade 230. Here, because the circular saw blade 230 rotates counterclockwise, and because a negative pressure is generated below the worktable 220 by a vacuum source 212 (not shown), the dust trajectory is substantially downward. As the workbench 220 continues to slide further toward the circular saw blade 230, dust is thus collected above the heavy debris chute 215 via a specific set of louvers 224. For example, as shown, dust travels through the first set of louvers 224 at t = _t1 , and dust travels through the second set of louvers 224 at t = _t2 .

It should be noted that specific parameters of the device 200 can be changed as needed to provide different performance characteristics and/or to cut different types of workpieces (e.g., different materials, different sizes, etc.). For example, as shown, the heavy chip chute 215 and each louver 224 are tilted to prevent dust particles from “bounced” back through the louvers 224. However, in certain embodiments, the louvers 224 may be coupled to a lever that uniformly adjusts the louvers 224 to tilt within a specific range (e.g., between 30 and 45 degrees). It is contemplated that various other parameters may also be adjusted, including, for example, the spacing between each louver 224, the rotations per minute (RPM) of the circular saw blade 230, and/or the suction force provided by the vacuum source 212.

As previously described, the aspects disclosed herein provide a system for collecting dust via any number of filters. Here, for example, Figures 8 through 11 provide an exemplary path for dust drawn through louvers 224. As shown, heavy debris drawn through louvers 224 falls into heavy debris compartment 240 via heavy debris chute 215, while lighter dust particles are drawn toward cyclone filter 216. As these lighter dust particles travel above cyclone filter 216, some dust is drawn down into cyclone particle compartment 250, while finer dust particles continue toward rotatable filter 217. In Figure 11, 290 represents the dust path to rotatable filter 217.

In a particular embodiment, as shown, the rotatable filter 217 is a cylindrical filter medium having multiple pleated portions around a cylindrical surface. The rotatable filter 217 further includes a filter cleaning baffle 218, which is fixed to a lateral partition wall located inside the rotatable filter 217, wherein the filter cleaning baffle 218 contacts the pleated portions when the filter cleaning knob is rotated. Furthermore, as the rotatable filter 217 rotates, the filter cleaning baffle 218 removes dust from the pleated portions, and the dust falls into the fine particle compartment 260.

As shown in the figure, dust can also be drawn in via vacuum inlet 233. As previously described, the first end of conduit 235 can be inserted into vacuum inlet 233, while the other end of conduit 235 is connected to vacuum port 228 on housing 210. Here, if the amount of suction below central slot 226 is insufficient, dust is drawn upward toward vacuum inlet 233, where it travels through conduit 235 and subsequently through filter within housing 210.

In another aspect of this disclosure, aspects for minimizing vacuum flow loss are envisioned. For example, as illustrated in Figures 12 and 13, the device 200 may be further configured to include extensions 219 along the airflow path. In such an embodiment, the extensions 219 are positioned at each end of the dust collection trough, where they may communicate with louvers 224. As the worktable 220 slides toward the circular saw blade 230, these extensions 219 block the preceding set of louvers 224 to minimize vacuum flow loss below the worktable 220.

Exemplary Cutting Saw Implementation

Referring next to Figures 14 and 15, a schematic diagram of a cutting saw construction according to the aspects disclosed herein is provided. As shown, the cutting saw device 300 includes a circular saw blade 330 and a housing 310 coupled to a worktable 320, wherein the worktable 320 is configured as a fixed platform above the housing 310. For this embodiment, similar to the worktable 220 of device 200, as shown, the worktable 320 includes a central groove 326 axially aligned with the circular saw blade 330. However, here, the circular saw blade 330 is attached to a rotatable arm 336, wherein a handle 331 on a blade guard 332 is used to raise and lower the circular saw blade 330 during use.

Regarding the housing 310 of device 300, it should be recognized that its components are substantially similar to the corresponding components of the housing 210 of device 200. For example, housing 310 also includes a multi-stage filter, which includes a rotatable filter 317 coupled to a cyclone filter 316, wherein a vacuum source 312 attached to the rotatable filter 317 is again configured to generate an airflow passing through the rotatable filter 317 and the cyclone filter 316. During use, this airflow provides negative pressure directly below the central slot 326, causing dust to be drawn through the central slot 326 toward the filter and subsequently collected in a dust container 313. In particular, heavy debris drawn through the central slot 326 falls into the dust container 313 through a heavy debris chute 315, while lighter dust particles are drawn toward the cyclone filter 316. As these lighter dust particles travel above the cyclone filter 316, some dust is pulled down into the dust container 313, while the finer dust particles continue toward the rotatable filter 317.

However, in addition to pulling the dust down through the central groove 326, as shown, the device 300 is configured to pull the dust back towards the container 323. In this embodiment, the vacuum source 312 thus provides suction force that passes both through the central groove 326 and through the container 323. For this purpose, the dust drawn through the container 323 travels through the vacuum port 318 and toward the filter. Here, it should be appreciated that the container 323 may be made of a brush or finger-like material. As shown, it may also include a barrier 321.

Exemplary table saw implementation

Referring now to Figures 16 and 17, a schematic diagram of a table saw construction according to the aspects disclosed herein is provided. As shown, the table saw device 400 includes a circular saw blade 430 and a housing 410 coupled to a worktable 420, wherein the worktable 420 is configured as a fixed platform above the housing 410. For this embodiment, similar to the worktable 220 of device 200, as shown, the worktable 420 includes a central groove 426 axially aligned with the circular saw blade 430. However, here, the circular saw blade 430 protrudes through the central groove 426 of the worktable 420. Furthermore, as shown, the circular saw blade 430 and the saw motor 434 are received within a blade housing 432 below the worktable 420, wherein the blade housing 432 is substantially located within the housing 410. In Figure 16, 490 represents a dust path.

Regarding the retaining components of housing 410, it should be recognized that these components are substantially similar to the corresponding components of housing 210 of device 200. For example, housing 410 also includes a multi-stage filter comprising a rotatable filter 417 coupled to a cyclone filter 416, wherein a vacuum source 412 attached to the rotatable filter 417 is again configured to generate an airflow passing through the rotatable filter 417 and the cyclone filter 416. During use, this airflow provides a negative pressure directly below the central slot 426, causing dust to be drawn through the central slot 426 toward the filter and subsequently collected in a dust container 413. In particular, heavy debris drawn through the central slot 426 falls into the dust container 413 via a heavy debris chute 415, while lighter dust particles are drawn toward the cyclone filter 416. As these lighter dust particles travel above the cyclone filter 416, some dust is pulled down into the dust container 413, while the finer dust particles continue toward the rotatable filter 417.

Exemplary blade cooling aspects

Referring next to Figures 18 through 22, illustrations are provided showing the various blade cooling aspects disclosed herein. It should be understood that cooling circular saw blades during "dry cutting" use is particularly desirable for achieving optimal performance and reducing the likelihood of blade damage.

Figures 18 and 19 provide a side view and a top view, respectively, of an exemplary device for promoting blade cooling according to one aspect of this specification. It should be understood that device 500 is substantially similar to the aforementioned devices 100, 200, 300, and 400, with each component of device 500 also substantially similar to those of devices 100, 200, 300, and 400. As shown, device 500 includes a vacuum source 512, a circular saw blade 530, and a worktable 520, the worktable 520 including a central groove 526 axially aligned with the circular saw blade 530. Here, the central groove 526 includes an airflow channel 527 located near the intended contact point 532 between the circular saw blade 530 and the workpiece 570. The vacuum source 512 is then configured to provide a concentrated negative pressure 528 below the worktable 520 via the airflow channel 527.

By properly aligning the airflow channel 527 with the intended contact point 532 between the circular saw blade 530 and the workpiece 570, it has been found that significant cooling of the circular saw blade 530 is achieved. That is, because the circular saw blade 530 may become very hot at the intended contact point 532 during use, it is particularly desirable to cool the circular saw blade 530 at the intended contact point 532 using the concentrated negative pressure 528.

Other configurations are envisioned for implementations using a sliding worktable. For example, Figure 20 provides a side view of an exemplary device utilizing a sliding worktable with louvers that promote blade cooling. It should be understood that device 600 is substantially similar to the aforementioned device 200, with the various components of device 600 also substantially similar to those of device 200. As shown, device 600 includes a vacuum source 612, a circular saw blade 630, and a worktable 620, which includes a central groove 626 axially aligned with the circular saw blade 630. Here, the central groove 626 includes an airflow channel 627 located near the intended contact point 632 between the circular saw blade 630 and the workpiece 670. The vacuum source 612 is then configured to provide a concentrated negative pressure 628 below the worktable 620 via the airflow channel 627.

However, in this particular embodiment, the worktable 620 is configured to slide toward the circular saw blade 630, wherein the central groove 626 includes a plurality of louvers 624 that respectively form airflow channels 627. Moreover, as the worktable 620 slides toward the circular saw blade 630, the airflow channels 627 change sequentially depending on which of the plurality of louvers 624 is closer to the intended contact point 632.

In one aspect of this disclosure, it has been found that the magnitude of the accumulated negative pressure 628 is inversely proportional to the orifice size of the airflow channel 627. Therefore, by reducing the gap size between the individual louvers 624, the magnitude of the accumulated negative pressure 628 will increase. To switch this magnitude, it is conceivable that removable louver inserts of various sizes can be used. For example, Figure 21 illustrates various aspects of an exemplary louver insert according to one aspect of this specification. As shown in Figure 700, by placing the insert 680 on top of the louvers 624, the gap 625 between the louvers 624 is reduced. That is, as shown in Figure 21, the insert gap width AA is smaller than the louver gap width BB.

Figures 710 and 720 further illustrate this reduction in gap size, with Figure 710 showing a worktable 620 without insert 680, and Figure 720 showing a worktable 620 with insert 680. As shown, in addition to the reduction in the size of gap 625, the size of a specific gap corresponding to airflow channel 627 is also reduced by using insert 680. Therefore, the accumulated negative pressure 628 at airflow channel 627 in Figure 720 is greater than the accumulated negative pressure 628 at airflow channel 627 in Figure 710.

In another aspect of this disclosure, it has been found that circular saw blades are more likely to overheat when unstable. Therefore, various aspects are envisioned for stabilizing the circular saw blade to minimize wobbling during use. In a particular envisioned aspect, a blade stabilizing roller is coupled to the circular saw blade, as shown in FIG22. In such an embodiment, as shown, the circular saw blade 830 is received within a blade guard 832 and coupled to a spindle 831 and a blade stabilizing roller 835. During use, the spindle 831 begins to rotate, causing the circular saw blade 830 to rotate. Once the circular saw blade 830 contacts the workpiece, the blade stabilizing roller 835 firmly holds the circular saw blade 830 in alignment while still allowing rotation. Therefore, because the circular saw blade 830 is more stable and less prone to wobbling, it is less likely to overheat.

Exemplary multi-stage filter aspects

As previously mentioned, various aspects involving the use of multi-stage filters are envisioned, such as the aforementioned device 200. In a particular embodiment, the disclosed device includes a housing comprising a vacuum source and a multi-stage filter. The device further includes a circular saw blade and a worktable, the worktable including a central groove aligned axially with the circular saw blade. Here, the vacuum source is configured to provide negative pressure below the worktable at the central groove, and the multi-stage filter is configured to collect dust from the air drawn in by the negative pressure from an area near the central groove.

For some countries, removing dust from the devices disclosed herein is actually problematic. Therefore, as illustrated in Figures 23-26 and further illustrated within device 200 in Figures 27-29, various aspects of a dedicated removable dust tray are envisioned. As shown, a removable dust tray 900 may be placed below a multi-stage filter, wherein the removable dust tray 900 includes a plurality of dust separation compartments 910, 920, and 930, and wherein each stage of the multi-stage filter has a corresponding compartment within the removable dust tray 900 (e.g., below the fine particle compartment 260, the swirling particle compartment 250, and the heavy debris compartment 240). As shown, the removable dust tray 900 may be further configured to accommodate at least one dust encapsulation bag 1000, the dust encapsulation bag 1000 including a strap 1010 and a gasket 1020. By pulling the strap 1010 when the removable dust tray 900 is inserted into the device 200, the user can seal all collected dust before removing the removable dust tray 900 from the device 200.

Exemplary auxiliary port aspect

As previously mentioned, various aspects involving the use of auxiliary ports are envisioned, such as the aforementioned device 200. In a particular embodiment, the disclosed device includes a vacuum source, a circular saw blade, and a worktable. In this embodiment, the worktable includes a central groove aligned axially with the circular saw blade, and the vacuum source is configured to provide a first negative pressure at the central groove below the worktable. The vacuum source is then further configured to provide a second negative pressure via the auxiliary port.

For some configurations, it may be desirable to transfer dust via different dust paths. For example, Figure 30 provides a schematic diagram of an exemplary dust transfer path for a blade guard according to one aspect of this specification. Here, three cyclone filters 1116 are dedicated to receiving dust collected at the central slot 1126, while a fourth cyclone filter 1117 is dedicated to collecting dust from the blade guard 1132 above the support arm 1136. This allows for a continuous supply of vacuum (if needed) in this back side of the blade. In Figure 30, 1118 indicates the blade guard dust path, and 1120 indicates the central slot dust path.

The word “exemplary” as used herein is intended to be used as an example, instance, or illustration. To avoid ambiguity, the subject matter disclosed herein is not limited to such examples. Furthermore, any aspect or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects or designs, nor is it intended to exclude equivalent exemplary structures and techniques known to those skilled in the art. Moreover, with respect to the use of the terms “comprising,” “having,” “including,” and other similar words in any of the detailed descriptions or claims, such terms are intended as open-ended transitional terms in a manner similar to the term “comprising,” without excluding any additional or other elements.

The aforementioned system has been described with respect to the interaction between several components. It will be appreciated that such a system and components may include these components or designated sub-components, designated components or some and/or additional components among the sub-components, and according to the various permutations and combinations described above. Sub-components may also be implemented as components connected to other components rather than included within a parent component (layer). Furthermore, it should be noted that one or more components may be combined into a single component to provide aggregate functionality or divided into several separate sub-components, and any one or more intermediate layers may be provided to connect to such sub-components to provide integrated functionality. Any component described herein may also interact with one or more other components not specifically described herein but generally known to those skilled in the art.

Given the exemplary system described above, the methods that can be implemented according to the disclosed subject matter can be understood with reference to the various accompanying drawings. Although the methods are described as a series of steps for the purpose of simplicity, it should be understood and recognized that the disclosed subject matter is not limited by the order of the steps, as some steps may occur in a different order and/or concurrently with other steps described herein. Moreover, not all disclosed steps require implementation of the methods described below.

While various embodiments have been described with reference to exemplary embodiments in conjunction with the accompanying drawings, it should be understood that other similar embodiments may be used, or modifications and additions may be made to the described embodiments that perform the same function without departing from that function. Therefore, the invention should not be limited to any single embodiment.

Claims (18)

1. A sawing device, the sawing device comprising: Vacuum source; Circular saw blades; and The worktable includes a central groove aligned axially with the circular saw blade. The central groove includes an airflow channel near the intended contact point between the circular saw blade and the workpiece, and the vacuum source is configured to provide a concentrated negative pressure below the worktable via alignment of the airflow channel with the intended contact point, the concentrated negative pressure being inversely proportional to the orifice size of the airflow channel. The worktable is configured to slide toward the circular saw blade, and the central groove includes a plurality of louvers that respectively form the airflow channels. As the worktable slides toward the circular saw blade, the airflow channels change sequentially according to which of the plurality of louvers is closer to the intended contact point. The sawing device further includes a center slot insert having a plurality of recesses formed between protrusions that are in phase with the plurality of louvers, the center slot insert being able to attach to the center slot at the top of the plurality of louvers. 2. The sawing apparatus according to claim 1, wherein the circular saw blade is coupled to the worktable which is configured as a cutting saw. 3. The sawing device according to claim 2, wherein the workbench further includes a container connected to the vacuum source and axially aligned with the rear portion of the circular saw blade, wherein dust in the air near the rear portion of the circular saw blade is drawn in by the negative pressure generated by the vacuum source at the container. 4. The sawing apparatus according to claim 1, wherein the circular saw blade is connected to the worktable configured as a table saw. 5. The sawing device according to claim 1, wherein the circular saw blade is connected to a blade stabilizer. 6. A sawing device, the sawing device comprising: The housing includes a vacuum source and a multi-stage filter; Circular saw blades; and The worktable includes a central groove aligned axially with the circular saw blade. The central slot includes an airflow channel near the intended contact point between the circular saw blade and the workpiece. A vacuum source is configured to provide a concentrated negative pressure below the worktable via alignment of the airflow channel with the intended contact point. This concentrated negative pressure is inversely proportional to the orifice size of the airflow channel. A multi-stage filter is configured to collect dust from the air drawn in by the negative pressure from the area near the central slot. The worktable is configured to slide toward the circular saw blade. The central groove includes multiple louvers that respectively form the airflow channels. As the worktable slides toward the circular saw blade, the airflow channels change sequentially according to which of the multiple louvers is closer to the intended contact point. The sawing device further includes a center slot insert having a plurality of recesses formed between protrusions that are in phase with the plurality of louvers, the center slot insert being able to attach to the center slot at the top of the plurality of louvers. 7. The sawing equipment according to claim 6, wherein the multi-stage filter comprises at least one cyclone filter. 8. The sawing equipment according to claim 6, wherein the multi-stage filter includes a rotatable filter. 9. The sawing device according to claim 8, wherein the rotatable filter includes a self-cleaning baffle. 10. The sawing apparatus of claim 6, further comprising a removable dust tray located below the multi-stage filter, wherein the removable dust tray comprises a plurality of separate compartments, and wherein each stage of the multi-stage filter has a corresponding compartment within the removable dust tray. 11. The sawing device according to claim 10, wherein the plurality of separation chambers includes a fine particle chamber, a swirling particle chamber, and a heavy debris chamber. 12. The sawing apparatus of claim 10, wherein the removable dust tray is configured to contain at least one dust encapsulation bag. 13. The sawing apparatus of claim 12, wherein the at least one dust bag is configured to include at least one strap insert for facilitating the closure of the at least one dust bag. 14. A sawing apparatus, the sawing apparatus comprising: Vacuum source; Circular saw blades; and The worktable includes a central groove aligned axially with the circular saw blade. The central slot includes an airflow channel near the intended contact point between the circular saw blade and the workpiece. A vacuum source is configured to provide a first negative pressure below the worktable via alignment of the airflow channel with the intended contact point. This first negative pressure is inversely proportional to the orifice size of the airflow channel. The vacuum source is also configured to provide a second negative pressure via an auxiliary port. The worktable is configured to slide toward the circular saw blade. The central groove includes multiple louvers that respectively form the airflow channels. As the worktable slides toward the circular saw blade, the airflow channels change sequentially according to which of the multiple louvers is closer to the intended contact point. The sawing device further includes a center slot insert having a plurality of recesses formed between protrusions that are in phase with the plurality of louvers, the center slot insert being able to attach to the center slot at the top of the plurality of louvers. 15. The sawing device according to claim 14, wherein the auxiliary port is located on the blade guard of the circular saw blade, and wherein dust in the air inside the blade guard is drawn toward the auxiliary port by the second negative pressure. 16. The sawing device according to claim 15, wherein dust in the air collected by the first negative pressure below the worktable at the central slot is conveyed to a first filter, and wherein the dust in the air within the blade guard is transferred to a second filter. 17. The sawing apparatus of claim 14, wherein the auxiliary port includes a container axially aligned with the rear portion of the circular saw blade, and wherein dust in the air near the rear portion of the circular saw blade is drawn toward the container by the second negative pressure. 18. The sawing apparatus of claim 14, wherein the auxiliary port is configured to connect the vacuum source to an external dust collection device.