Table saw with a stop unit

Abstract

The invention relates to a stop unit (50), in particular an angled stop, for guiding and / or feeding a workpiece to a saw blade (2) of a table saw (55), comprising a stop arm (55) extending in the longitudinal direction (54) for stopping the workpiece, wherein the stop arm (55) has a main section (51) produced from a first material, which extends over more than half the longitudinal extension of the stop arm (55), and at least one second end section (52) arranged at an end of the main section (51) in the longitudinal direction (54), which can come into contact with the saw blade (2) when feeding a workpiece towards the saw blade (2), wherein the at least one end section (52) is produced from a second material.

Description

[0001] The invention relates to a table saw according to the preamble of claim 1.

[0002] The present invention is particularly concerned with the task of reducing the probability of operational malfunctions and / or increasing operational reliability.

[0003] The table saw comprises a stop unit, a support section for supporting the workpiece, and a saw blade. The table saw is expediently designed to perform a safety function, in particular for stopping the saw blade and / or moving the saw blade into a safety position, based on an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade. The safety function is expediently not triggered by contact between the saw blade and the workpiece and is triggered when the saw blade comes into contact with the human body.

[0004] The table saw comprises the stop unit, in particular an angle stop, for guiding and / or advancing the workpiece to the saw blade of the table saw. The stop unit comprises a stop arm extending in a longitudinal direction for supporting the workpiece. The stop arm comprises a main section made of a first material, which extends over more than half the longitudinal extent of the stop arm. The stop arm further comprises at least one second end section arranged at a longitudinal end of the main section. The second end section can come into contact with the saw blade when a workpiece is fed toward the saw blade.

[0005] US Pat. No. 5,042,346 A describes a device for making miter cuts. A stop has a pair of extensions.

[0006] US 2011 / 296968 A1 concerns a table saw. Magnets are arranged at the ends of a miter stop plate.

[0007] US 2010 / 269657 A1 concerns a table saw with a stop.

[0008] US 6 095 024 discloses a table saw according to the preamble of claim 1.

[0009] An object of the invention is to modify the table saw so that the probability of

[0010] operational disruptions can be reduced.

[0011] This object is achieved by a table saw according to claim 1. Preferred embodiments can be found in the dependent claims. In the stop unit of the table saw according to claim 1, at least one end section is made of a second material. The electrical property, in particular the electrical conductivity of the second material, is such that the table saw does not perform the safety function when the saw blade comes into contact with the end section.

[0012] When feeding the workpiece with the stop unit, the end section may come into contact with the saw blade. Conventional stop units typically have a one-piece metal stop arm. If the saw blade comes into contact with the metal end section of such a conventional stop arm, the saw blade may stop and / or be moved to a safety position. This disrupts the operation of the table saw. Furthermore, the stop arm may be damaged, requiring the entire stop arm to be replaced due to its one-piece design.

[0013] Because the end section of this stop unit is made of a different material than the main section, the material of the end section (particularly independent of the material of the main section) can be selected such that the safety function inherent in the table saw is not triggered by contact of the saw blade with the end section. Furthermore, the material of the end section can be selected such that the end section can be provided as a cost-effective wear part. At the same time, the main section can be made of a stable, durable material, such as metal, even if this material would trigger the safety function upon contact of the saw blade with the main section.

[0014] The features "first material" and "second material" mentioned with reference to the stop unit are different from the features "first material" and "second material" mentioned below with reference to the saw blade cover. The feature "first material" mentioned with reference to the stop unit may also be referred to as "third material" or "main section material," and the "second material" mentioned with reference to the stop unit may also be referred to as "fourth material" or "end section material."

[0015] The second material mentioned with respect to the stop unit differs from the first material mentioned with respect to the stop unit. In particular, the second material has a different conductivity than the first material. Expediently, a lower conductivity. By way of example, the first material is metal and / or the second material is plastic.

[0016] The at least one end section is expediently removably attached to the main section. For example, the at least one end section is inserted into and / or onto an end face of the main section. Expediently, the main section is an extruded profile and / or the end section is a plastic cap.

[0017] The table saw preferably comprises a support structure with a support surface for supporting the workpiece during machining with the saw blade. The table saw comprises the stop unit for guiding and / or advancing the workpiece toward the saw blade. The stop unit comprises a bearing section that engages with a guide element of the table saw, thereby providing a movable mounting of the stop unit relative to the support structure along the guide element. The guide element is arranged offset downward relative to the support surface.

[0018] According to a preferred embodiment, the bearing section comprises rollers, via which the bearing section is movably mounted relative to the support section. Two of the rollers are expediently aligned in different spatial directions relative to each other.

[0019] The table saw optionally includes a saw blade cover. The saw blade cover is designed, in particular, as a saw blade hood and comprises a cover body extending in a longitudinal direction and made of a first material for at least partially covering the saw blade of the table saw. The saw blade cover further comprises a contact area arranged on the front side of the cover body. The contact area is beveled relative to the longitudinal direction, so that contact of the contact area with a workpiece brought toward the saw blade can cause a deflection of the cover body.

[0020] One task is to modify the saw blade cover in such a way that the likelihood of operational failures can be reduced.

[0021] Optionally, the contact area has a sliding section made of a second material along which the workpiece can slide when it comes into contact with the contact area.

[0022] Particularly when the workpiece is made of a hard material and / or has a sharp edge on the side facing the sawblade, conventional sawblade guards can cause the workpiece to cut into the material of the contact area upon contact with the contact area and subsequently become stuck there. This can then result in the sawblade guard not being deflected, preventing the sawblade from opening. Consequently, the workpiece cannot be brought close to the sawblade's cutting area, disrupting the operation of the table saw.

[0023] By equipping the saw blade cover with a sliding section, the likelihood of this malfunction can be effectively reduced. In particular, the sliding section can prevent a workpiece from cutting into the contact area upon contact and becoming stuck there. Consequently, the likelihood of malfunctions can be reduced.

[0024] The first material can also be referred to as the cover body material, and the second material can also be referred to as the sliding section material. The second material differs from the first material. The second material expediently has a greater hardness than the first material. The first material is, in particular, plastic, and / or the second material is, in particular, metal, preferably aluminum.

[0025] The sliding section is expediently strip-shaped. Preferably, the sliding section is designed as an aluminum strip. According to a preferred embodiment, the contact area and the sliding section are elongated. The sliding section expediently runs in the longitudinal direction of the contact area.

[0026] The contact area is expediently a frontal contact surface. The sliding section is expediently present only in a partial area, in particular a central horizontal area, of the frontal contact surface.

[0027] According to an alternative embodiment, the entire contact area, in particular the entire contact surface, is made of the second material.

[0028] Alternatively or additionally, a saw blade cover is also provided, the cover body of which is made entirely of metal, in particular aluminum.

[0029] According to a preferred embodiment, the cover body at least partially covers the saw blade in a covering position. The cover body is mounted so as to be movable relative to the saw blade, so that the cover body can be moved into a release position by applying pressure to the contact area with the workpiece moving on the support section in the direction of the saw blade. In this release position, the saw blade is released further than in the covering position. In particular, the cutting area of ​​the saw blade is released in the release position. The cutting area is the area of ​​the saw blade with which the workpiece is machined when the table saw is used as intended.

[0030] Optionally, the table saw comprises a support structure with the support section, which provides a support surface for supporting a workpiece, and the saw blade, which extends through an opening in the support section so that at least a portion of the saw blade is located below the underside of the support section. The table saw preferably comprises a housing arrangement located below the underside of the support section, which surrounds the portion of the saw blade located below the underside of the support section. The saw blade, together with the housing arrangement, is preferably pivotable relative to the support section in order to adjust an angle between a cutting plane of the saw blade and the support surface.

[0031] One task is to increase operational safety.

[0032] The table saw optionally includes a cover flap that covers the gap created between the housing assembly and the underside of the support section when pivoting the housing assembly. This prevents a table saw user from reaching through the gap to the saw blade. This increases the operational safety of the table saw.

[0033] The cover flap is expediently mounted, in particular movably, on the housing arrangement and / or the support structure. Preferably, the cover flap is movably mounted on the housing arrangement and / or fixedly mounted on the support structure.

[0034] For example, the cover flap can be moved from a first position to a second position by pivoting the housing assembly. In the first position, the cover flap is aligned parallel to the underside of the support section and / or in the second position, it is inclined about a horizontal axis relative to the underside of the support section.

[0035] The support structure conveniently features several legs that can be used to prop the support section against the floor. There are open spaces between each leg through which a user can reach under the underside of the support section. The table saw, and especially the support structure, is thus virtually unencapsulated, allowing a user to easily reach under the support section.

[0036] Further exemplary features and embodiments are explained below with reference to the figures. Figure 1 a saw blade cover, Figure 2 a table saw with the saw blade cover, Figure 3 a stop unit, Figure 4 a stop arm of the stop unit Figure 5 a bearing section of the stop unit which is movably mounted on a support structure of a table saw, Figure 6 a table saw with the stop unit, Figure 7 an adjusting section located on the underside of a support section of a table saw in a first position, Figure 8 the adjusting section in a second position, Figure 9 an unequipped accessory fastening structure, Figure 10 an equipped accessory fastening structure, Figure 11 an unequipped extraction plate, Figure 12 an equipped extraction plate.

[0037] In the following description, reference is made to the orthogonal spatial directions referred to as the x-direction, y-direction, and z-direction. The z-direction can also be referred to as the height direction and runs vertically. The x-direction and y-direction are horizontal directions.

[0038] First, we will discuss the basic structure of the table saw. The following explanation applies to all table saws mentioned here, especially to those in the Figures 2 and 6 shown table saws 10, 20, 30. Preferably, all table saws mentioned here are the same table saw.

[0039] The table saw 10, 20, 30 is exemplified as a circular table saw. The table saw 10, 20, 30 is, in particular, a semi-stationary tool. The table saw 10, 20, 30 comprises a saw blade 2, in particular a circular saw blade. The table saw 10, 20, 30 expediently comprises a drive unit 86 for driving, in particular rotating, the saw blade 2. The drive unit 86 expediently comprises an electric motor.

[0040] The table saw 10, 20, 30 comprises a support structure 12, which is exemplified as a table. The support structure 12 comprises a support section 1, the support section upper side 8 of which serves as a support surface 8 for a workpiece 11 to be machined with the saw blade 2. The support section 1 is exemplified as a plate-shaped structure, in particular as a tabletop. The support section 1 expediently has a rectangular base area. The support surface 8 is expediently rectangular. The support surface 8 is oriented perpendicular to the z-direction and is preferably flat.

[0041] The support structure 12 further comprises a plurality of legs 7—exemplarily four legs 7 arranged at the four corner regions of the support section 1—by means of which the support section 1 is supported relative to the floor. Free spaces are expediently provided between the legs 7, which extend, for example, over more than three-quarters of the vertical extent of the legs 7. In particular, there is no cladding, in particular no housing wall, between two or more legs 7. A user can reach between two legs 7 into the free space below the underside 14 of the support section.

[0042] In the support section 1, in particular the support surface 8, there is an opening, for example a slot, through which the saw blade 2 engages. The opening is aligned with its longitudinal direction in the x-direction. A part of the saw blade 2 is located above the support section 1, in particular above the support surface 8, and another part of the saw blade is located below the support section 1, in particular below the underside 14 of the support section.

[0043] The table saw 10, 20, 30 comprises a safety function that is automatically triggered when contact is detected between the saw blade 2 and a body part of a person. The table saw 10, 20, 30 is expediently designed to detect an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade by providing an electrical signal to the saw blade 2 in order to determine whether the object is a human body part. The table saw 10, 20, 30 is further designed to execute the safety function based on the detected electrical conductivity. When the safety function is executed, for example, the saw blade 2 is stopped, in particular braked, and / or the saw blade 2 is moved into a safety position, in particular into a safety position in which the saw blade 2 is located completely below the support surface 8.

[0044] The functioning of such a detection of a contact of the saw blade 2 with a body part and a

[0045] The safety function is known, for example, from EP 1 234 285 B1, so that a detailed description of its functionality is omitted here.

[0046] The table saw 10, 20, 30 has an adjustment section 3, which is exemplary in the Figures 7 and 8is shown. The adjusting section 3 is designed to adjust the position of the saw blade 2 relative to the support surface 8. The adjusting section 3 is expediently designed to pivot the saw blade 2 relative to the support surface 8 about a pivot axis running in the x-direction in order to adjust an angle between the cutting plane of the saw blade 2 and the support surface 8. The adjusting section 3 is also expediently designed to move the saw blade 2 into different positions along a linear movement path, in particular a vertical and / or linear movement path pivotable about the aforementioned pivot axis, in order to adjust how far the saw blade 2 projects upwards out of the opening. In this way, for example, the cutting depth of the table saw 10, 20, 30 can be adjusted.

[0047] The saw blade cover 40 will be discussed in detail below. The saw blade cover 40 can be provided as part of one of the table saws 10, 20, 30 described here and / or on its own. Conveniently, the saw blade cover 40 already represents an embodiment not according to the invention.

[0048] The saw blade cover 40 is in itself in the Figure 1 shown. In the Figures 2 and 6 the saw blade cover 40 is shown in a state attached to the table saw 10, 20, 30.

[0049] The saw blade cover 40 is designed in particular as a saw blade hood and comprises a cover body 41 made of a first material, extending in a longitudinal direction (of the saw blade cover 40), for at least partially covering the saw blade 2 of the table saw 10, 20, 30. The saw blade cover 40 further comprises a contact region 47 arranged on the end face of the cover body 41. The contact region 47 is beveled relative to the longitudinal direction of the saw blade cover 40, such that contact of the contact region 47 with a workpiece 11 moving toward the saw blade 2 can cause a deflection of the cover body 41. The contact region 47 has a sliding section 48 made of a second material, along which the workpiece 11 can slide upon contact with the contact region 47.

[0050] The sliding section 48 is provided to prevent the workpiece 11 from cutting into the contact area 47 when it comes into contact with it and from getting stuck on the contact area 47.

[0051] The second material differs from the first material. The second material expediently has a greater hardness than the first material. The first material is, in particular, plastic and / or the second material is, in particular, metal, preferably aluminum.

[0052] The saw blade cover 40, in particular the cover body 41, is preferably elongated and in particular flat and / or plate-shaped. For example, the cover body 41 is sword-shaped. In the intended orientation, the largest sides of the cover body 41 - in particular the long sides - are aligned perpendicular to a horizontal direction, in particular perpendicular to the y-direction, as shown in the Figures 2 and 6is shown.

[0053] On the underside of the cover body 41, there is an opening 43, in particular a slot, into which the saw blade 2 can be at least partially received. In the state in which it is at least partially located in the opening 43, the saw blade 2 is covered, for example, by the longitudinal sides, the top side, and / or the front end face of the cover body 41.

[0054] The saw blade cover 40 comprises a connecting section 44, which, for example, has a suction connection 45. A suction hose (not shown in the figures) can be connected to the suction connection 45 in order to extract dust particles that arise when sawing the workpiece 11. The connecting section 44 comprises a mechanical interface for fastening the saw blade cover 40 to a fastening section 46 of the table saw 10, 20, 30, in particular to the riving knife 9. The riving knife 9 is arranged, for example, behind the saw blade 2 in the x-direction. The riving knife 9 protrudes, for example, from the opening in the support surface 8. The cover body 41 is expediently mounted on the connecting section 44 so as to be pivotable about a horizontal axis, in particular an axis running in the y-direction. The connecting section 44 is arranged in the longitudinal direction of the saw blade cover 40 on the rear end face of the saw blade cover 40.In the state fastened to the fastening section 46, i.e. when the saw blade cover 40 is installed as intended on the table saw 10, 20, 30, the saw blade cover 40 is expediently aligned with its longitudinal direction parallel to the x-direction.

[0055] The contact area 47 already mentioned above is arranged in the longitudinal direction of the saw blade cover 40 on the front end face of the saw blade cover 40. The contact area 47 expediently represents the front end face of the saw blade cover 40, in particular the front end face of the cover body 41.

[0056] The contact area 47 is bevelled relative to the longitudinal direction of the saw blade cover 40. As shown in the Figures 2 and 6As can be seen, the contact area 47 (when the saw blade cover 40 is installed) is beveled relative to the x-direction and relative to the support surface 8, i.e., inclined. In particular, the contact area 47 is aligned perpendicular to an xz-direction. In an xz-section, the contact area 47 runs diagonally from the bottom to the top right, in the direction away from the saw blade 2.

[0057] The cover body 41 expediently has a contact point 53 which, in the installed state of the saw blade cover 40, preferably forms the lowest point of the saw blade cover 40 and / or rests on the support surface 8 (provided that the cover body 41 is not deflected, in particular lifted, by being subjected to the action of the workpiece 11).

[0058] The contact area 47 is expediently curved in an xz section, in particular parabolic. The contact area 47 is beveled such that when a workpiece 11 located on the support surface, which is moving in the x-direction toward the saw blade 2, impacts the contact area 47, a force component (in particular an upward force component) is provided, which causes a deflection, in particular a pivoting, of the cover body 41 relative to the saw blade 2, the support surface 8, and / or the connecting section 44, in particular a deflection and / or pivoting upward.

[0059] By pressing the workpiece 11 against the contact area 47 by the user, the position of the cover body 41 can be changed so that the cover body 41 clears the path to the saw blade 2 and / or the cutting area of ​​the saw blade 2. In this case, the cover body 41 expediently lifts off the support surface 8 with its contact point 53.

[0060] During the movement of the workpiece 11 towards the saw blade 2, the workpiece 11 remains in contact with the contact area 47 for part of the path and slides along the sliding section 48. The cover body 41 is thereby pushed further and further upwards by the contact of the workpiece 11 with the contact area 47.

[0061] Before the workpiece 11 comes into contact with the contact area 47, the cover body 41 is expediently in a covering position in which the cover body 41 at least partially covers the saw blade 2 and the contact point 53 expediently rests on the support surface 8. If the contact area 47 is subjected to the workpiece 11 moving in the direction toward the saw blade 2, the cover body 41 is deflected further and further until it is in a release position in which the saw blade 2 is released further than in the covering position. Expediently, in the release position, the cover body 41 is deflected so far that the workpiece 11 can be fed to the cutting area of ​​the saw blade 2 and can be machined by the saw blade 2.

[0062] The sliding section 48 is expediently designed in a strip-like manner, in particular in a band-like manner. The sliding section 48 is preferably designed as a metal strip, in particular as an aluminum strip. Alternatively, the sliding section 48 can also be made of another hard material, which is expediently harder than the first material of the cover body 41. The sliding section 48, in particular the aluminum strip, is embedded in the contact region 47, in particular the contact surface, and / or placed thereon, in particular glued thereto.

[0063] Preferably, the contact area 47 and the sliding section 48 are elongated. The sliding section 48 expediently extends in the longitudinal direction of the contact area 47. The longitudinal direction of the contact area 47 and / or the sliding section 48 expediently extends diagonally upward relative to the support surface 8, in particular in the direction away from the saw blade 2. The contact area 47 is expediently a frontal contact surface, in particular of the cover body 11.

[0064] The sliding section 48 is expediently present only in a partial area, in particular a central partial area in the horizontal direction, in particular in the y-direction, of the frontal contact surface. In the y-direction, surface sections 49 expediently result laterally from the sliding section 48, where the sliding section 48 is not present. These surface sections 49 are expediently made of the first material and, for example, occupy more than half of the y-extension of the contact surface, so that the sliding section 48 expediently occupies less than half of the y-extension.

[0065] According to an alternative embodiment, the entire contact area, in particular the entire contact surface, is made of the second material, so that the entire contact area represents the sliding section.

[0066] The sliding portion 48 expediently extends over more than half the longitudinal extent of the contact area 47. For example, the cover body 41 has a projection 52 projecting obliquely upward, which is arranged in the region of the front end face of the cover body 41 and provides part of the contact area 47. The sliding portion 48 expediently extends into the part of the contact area 47 provided by the projection 52.

[0067] The sliding section 48 can also be referred to as a reinforcement of the end face of the saw blade cover. The saw blade cover can also be referred to as a protective device. The sliding section 48 is expediently a strip made of a hard material that is attached to the protective device so that the end face - in particular the contact area 47 - of the protective device can slide with the strip on a contact edge of a cut material of a workpiece to be machined. The sliding section 48 - exemplarily the hard material strip - protects the end face of the protective device from pinching (digging / notching) on ​​the sharp contact edge of the cut material, which slides over the hard material strip when the cut material is guided into the cut.

[0068] Alternatively or additionally, a saw blade cover is further provided as an embodiment not according to the invention, the cover body of which is made entirely of metal, in particular aluminum. This saw blade cover is expediently designed as explained above, except that the sliding section is not made of a second material but of the same material as the rest of the cover body.

[0069] The invention relates to a stop unit 50, in particular an angle stop, for guiding and / or feeding a workpiece 11 to a saw blade 2 of a table saw.

[0070] The stop unit 50 is in itself in the Figure 3 shown. The Figure 6 shows a table saw 20 having a stop unit 50.

[0071] The stop unit 50 comprises a stop arm 55 extending in a longitudinal direction 54 for supporting the workpiece 11. In the Figure 6The stop arm 55 is oriented with its longitudinal direction, for example, in the y-direction. The stop arm 55 comprises a main section 51 made of a first material, which extends over more than half of the longitudinal extent of the stop arm 55. The feature "first material" mentioned here is a different feature than the feature "first material" mentioned above with reference to the saw blade cover 40. The "first material" mentioned here with reference to the stop unit 50 can also be referred to as the "third material" or "main section material" for the purpose of better differentiation.

[0072] The stop arm 55 further comprises at least one second end section 52 arranged at an end of the main section 51 located in the longitudinal direction 54. By way of example, the stop arm 55 comprises a second end section 52 at each of the two ends located in the longitudinal direction, so that the stop arm has two end sections 52.

[0073] The second end portion 52 can come into contact with the saw blade 2 when a workpiece 11 is advanced toward the saw blade 2. In particular, the stop unit 50, when mounted on the support structure 12 of the table saw 20, can be moved into a position in which the end portion 52 comes into contact with the saw blade 2, in particular the cutting area of ​​the saw blade 2. The at least one end portion 52 is made of a second material that differs from the first material.

[0074] The "second material" feature mentioned here is a different feature than the "second material" feature mentioned above with reference to the saw blade cover 40. The "second material" mentioned here with reference to the stop unit 50 may also be referred to as the "fourth material" or "end section material" for the purpose of better differentiation.

[0075] The second material differs from the first material. In particular, the second material has a different electrical conductivity than the first material. Expediently, a lower electrical conductivity. By way of example, the first material is metal and / or the second material is plastic. In particular, the second material has a different, preferably lower, electrical conductivity than the human body. By providing the end portion 52 from the second material, it can be prevented that the aforementioned safety function of the table saw 20 is triggered upon contact of the end portion 52 with the saw blade 2.

[0076] The table saw 20 is expediently designed to perform the safety function, in particular for stopping the saw blade 2 and / or for moving the saw blade 2 into a safety position, based on an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade 2. The electrical property, in particular the electrical conductivity of the second material, is such that the table saw 20 does not perform the safety function when the saw blade comes into contact with the end section 52.

[0077] Preferably, the electrical property, in particular the electrical conductivity of the first material, is such that the table saw 20 performs the safety function when the saw blade comes into contact with the first material.

[0078] The stop arm 55 is expediently designed in a strip-shaped manner and can also be referred to as a guide strip. The stop arm 55 is oriented with its largest surface area—its long side—normal to a horizontal direction, expediently orthogonal to the support surface 8. The main section 51 of the stop arm 55 expediently extends over more than 70% of the longitudinal extent of the stop arm 55. The main section 51 is designed in a strip-shaped manner and with its largest surface area—aligned orthogonal to the support surface 8. The long sides of the main section 51 are, for example, rectangular. The main section 51 is expediently an extruded profile and is made in particular of metal.

[0079] In the longitudinal direction, an end section 52 adjoins both ends of the main section 51. Each end section expediently takes up less than 20% of the longitudinal extent of the stop arm 55. Each end section 52 expediently continues the transverse outer contour of the main section 51 in the longitudinal direction, so that the stop arm 55 as a whole results in a strip-shaped body with a constant thickness. Each end section 52 expediently has the same thickness as the main section 51. Expediently, the end face of each end section 52 located in the longitudinal direction of the stop arm 55 is beveled. Each end section 52 is aligned with its largest side in terms of area - the long side - normal to the support surface 8. Due to the bevel on the respective end face, the long side of each end section 52 is, for example, triangular in shape.

[0080] Each end section 52 is expediently removably attached to the main section 51. For example, each end section 51 is inserted into and / or onto an end face of the main section 52. For example, each end section 52 is designed as a plastic cap. Each end section 52 is expediently attached to the main section 51 via a snap-in connection. For example, each end section 51 has a snap-in element 62 that engages a corresponding snap-in opening in the main section 51.

[0081] Each end section 52 can be conveniently removed from the main section 51 and replaced with a new, identically designed end section 52. Each end section 52 is conveniently a wearing part. In particular, tool-free and / or non-destructive attachment and / or removal of each end section 52 from the main section 51 is possible.

[0082] The stop arm 55 expediently further comprises a cover layer 53 arranged on a longitudinal side of the stop arm 55. The cover layer 53 is arranged in particular on that longitudinal side of the stop arm 55 against which the workpiece 11 rests during the intended use of the stop unit 50. The cover layer 53 expediently covers the entire longitudinal side of the stop arm 55. The cover layer 53 can expediently be made of a material that does not trigger the aforementioned safety function upon contact with the saw blade 2.

[0083] The stop unit 55 further comprises a bearing section 67 with which the stop unit 55 can be movably mounted on the support structure 12 of the table saw 20. The bearing section 67 comprises a roller section 56 on which a plurality of rollers 57, 58 are arranged, via which the bearing section 67 can be movably mounted on the support structure 12.

[0084] The roller section 56 comprises, for example, a horizontal section 64 extending in a horizontal direction, on which a plurality of, for example two, vertically extending vertical sections 65 are arranged.

[0085] A plurality of rollers 57, 58 are arranged on each vertical section 65, for example, two rollers per vertical section 65. Two of the rollers 57, 58 are expediently aligned in different spatial directions relative to one another, in particular orthogonally to one another. For example, each vertical section 65 comprises two rollers 57, 58 aligned in different spatial directions—for example, one horizontal roller 57, whose roller plane is aligned parallel to a horizontal plane, and one vertical roller 58, whose roller plane is aligned parallel to a vertical plane.

[0086] The roller section 56 expediently further comprises a sliding block 63. The sliding block 63 is in particular elongated and expediently arranged on the underside of the horizontal section 64.

[0087] The stop arm 55 is expediently mounted via a pivot bearing 60 so as to be pivotable about a vertical pivot axis relative to the bearing section 67. The pivot bearing 60 has, for example, an angle scale. The stop arm 55 is further expediently mounted for linear movement relative to the bearing section 67 via a linear bearing. For example, the stop unit 50 has a connecting section 59, which is expediently elongated and preferably extends in a horizontal direction, in particular in a direction orthogonal to the longitudinal direction of the horizontal section 64. Expediently, the stop arm 55 is pivotally mounted on the connecting section 59 via the pivot bearing 60, and the connecting section 59 is mounted on the bearing section 67 via the linear bearing so as to be linearly movable, in particular in the longitudinal direction of the connecting section 59.Conveniently, one or more operating elements are provided to lock and / or release the linear bearing, the pivot bearing 60 and / or the bearing of the bearing section 67 on the support structure.

[0088] The mounting of the stop unit 55 on the support structure 12 is shown as an example in the Figures 5 and 6 shown.

[0089] In particular, the support structure 12 of the table saw 20 has one or more guide elements 6 on which the bearing section 67 is or can be mounted. By way of example, each guide element 6 is arranged on a respective peripheral wall 5 of the support structure 12, in particular of the support section 1. Each peripheral wall is oriented perpendicular to a horizontal direction. Each guide element 6 is expediently designed as a rail element extending in a horizontal direction. By way of example, each guide element 6 provides a groove extending in a horizontal direction, in particular a V-groove, into which the aforementioned sliding block 63 is inserted when the bearing section 67 is mounted on the support structure 12.

[0090] Each guide element 6 is expediently arranged offset downward in the z-direction relative to the support surface 8. Each guide element 6 provides a respective linear guide path for the bearing section 67. The bearing section 67 can be removed from one guide element 6 and attached to another guide element 6, for example, to another peripheral wall 5.

[0091] In the Figure 6 The stop unit 50, with its bearing section 67, is mounted, for example, on a peripheral wall 5 oriented perpendicular to the y-direction. The stop unit 50 can be moved linearly in the x-direction along the guide element 6 located on this peripheral wall 5.

[0092] The stop arm 55 is located at least partially on or above the support surface 8 and can be positioned in its x-coordinate by the linear movement of the stop unit 50, in particular relative to the support section 1 and / or the saw blade 2.

[0093] The stop unit 50 can be removed from the peripheral wall 5 oriented perpendicular to the y-direction and attached to a peripheral wall 5 oriented perpendicular to the x-direction. There, the stop unit 50 can then be moved in the y-direction to position the stop arm 55 in its y-coordinate.

[0094] The Figure 6shows a detailed view of the mounting of the bearing section 67 on the peripheral wall 5 and the guide element 6 of the support structure 12. The bearing section 67 engages with the guide element 6. For example, the sliding block 63 is inserted into the groove provided by the guide element 6. The vertical rollers 58 rest against the guide element 6 from below. The horizontal rollers 57 rest against the peripheral wall 5.

[0095] The stop unit 50 is guided in a V-groove, which is not (as is conventional) arranged in the tabletop - for example the support surface 8 - but instead is arranged on the peripheral wall 5. Furthermore, the guidance is provided by rollers on the V-groove. In addition, there are expediently lateral rollers - the horizontal rollers - which counteract tilting. The rollers are rotatably mounted on the bearing section, which can also be referred to as the angle stop frame. The guide arm is attached to the frame of the angle stop (for example via the connecting section), which lies on the support section, which can also be referred to as the saw table. The guide arm guides the workpiece to be machined. The guide arm is preferably adjustable with respect to the cutting plane at any angle within the range of + / - 90°.At this angle, it can be attached to the miter stop frame and used to guide and / or push the material into the cutting area of ​​the saw blade. The angle of rotation of the guide arm can be read on the angle scale, which is part of the miter stop.

[0096] The guide arm (also known as a guide rail) has protective caps attached to its ends that prevent the activation of a safety function, particularly the "Active Injury Mitigation" (AIM) function, when sawing into the blade. The AIM function can also be referred to as an active injury mitigation function.

[0097] The following shall be considered with reference to the Figures 2 , 7 and 8 A table saw 30 will be explained, which provides an embodiment not according to the invention. The table saw 30 is expediently designed like one of the table saws explained above.

[0098] The table saw 30 comprises the support structure 12 with the support section 1, which provides the support surface 8 for supporting the workpiece 11, and the saw blade 2, which extends through the opening of the support section 1 so that at least a portion of the saw blade 2 is located below the support section underside 14. The table saw 30 further comprises a housing assembly 80 located below the support section underside 14, which surrounds the portion of the saw blade 2 located below the support section underside 14. The saw blade 2, together with the housing assembly 80, is pivotable relative to the support section 1 in order to adjust an angle between a cutting plane of the saw blade 2 and the support surface 8.

[0099] The table saw 30 comprises a cover flap 87 which covers a gap created between the housing assembly 80 and the support section underside 14 when the housing assembly 80 is pivoted, in order to prevent a user of the table saw 30 from reaching through the gap to the part of the saw blade 2 located below the support section underside 14.

[0100] In the Figures 7 and 8, a section of the support section underside 14 and of an adjusting section 3 located thereon is shown. As already explained above, the adjusting section 3 serves to pivot the saw blade 2 about a horizontal pivot axis, in particular a pivot axis running in the x-direction. The adjusting section 3 comprises a bearing section 81 arranged on the support structure 12, in particular the support section underside 14, and a pivot section 82 which is pivotably mounted relative to the bearing section 81 about the aforementioned pivot axis. The pivot axis is defined, for example, by a guide section 94 provided on the bearing section 81, in particular a guide slot, on which the pivot section 82 is guided.

[0101] The Figure 7 shows the pivoting section 82 in a normal position in which the pivoting section 82 is not pivoted and is aligned orthogonally to the support section underside 14.

[0102] The Figure 8 shows the pivoting section 82 in a pivoting position in which the pivoting section 82 is pivoted and is not aligned orthogonally to the support section underside 14.

[0103] The pivoting section 82 comprises, by way of example, the housing arrangement 80, the saw blade 2 and expediently the drive unit 86. The drive unit 86 and the saw blade 2 are preferably mounted so as to be linearly movable relative to the housing arrangement 80 in order to adjust how far the saw blade 2 protrudes from the opening in the support surface 8.

[0104] The housing arrangement 80 comprises, by way of example, a housing shell 83 whose largest side in terms of area, hereinafter also referred to as the lateral side 85, is oriented perpendicular to the y-direction in the normal position. The housing shell 83 further comprises an upper side 84 oriented orthogonally to the lateral side 85, which, in the normal position of the pivot section 82, is oriented parallel to the support section underside 14. The housing shell 83 further comprises a transverse side 93 oriented orthogonally to the lateral side 85 and orthogonally to the upper side 84, which is expediently oriented perpendicular to the x-direction.

[0105] The cover flap 87 is expediently made of a rigid material, preferably metal. The cover flap 87 is expediently designed as a cover plate. The cover flap 87 comprises a plate-shaped cover section 88. The cover flap 87 is elongated and oriented with its longitudinal direction in the x-direction.

[0106] The cover flap 87 is mounted, for example, on the housing assembly 80, in particular on the transverse side 93, and on the support structure, in particular on the support section underside 14. For example, the cover flap 87 comprises a first fastening section 89, which is expediently designed as a tab, and is pivotably mounted on the housing shell 83, in particular on the transverse side 93, via the first fastening section 89. The cover flap 87 further comprises a second fastening section 91, with which the cover flap 87 is expediently mounted for linear movement on the support structure 12, in particular a guide slot 92. The second fastening section 91 is expediently an edge region of the cover flap 87. The guide slot 92 is expediently a space between the support section underside 14 and another element of the support structure 12.Alternatively, the second fastening section 91 can also be firmly attached to the support structure 12.

[0107] By way of example, the cover flap 87 can be moved from a first position to a second position by pivoting the pivoting section 82, in particular the housing arrangement 80. In particular, the cover flap 87 is pivoted from the first position to the second position by pivoting the pivoting section 82 from the normal position to the pivoted position. In the first position, the cover flap 87 is aligned parallel to the underside 14 of the support section. Expediently, in the first position, the cover flap 87 is arranged at least partially between the upper side 84 and the underside 14 of the support section. In the second position, the cover flap 87 is aligned inclined to the underside 14 of the support section about a horizontal axis, in particular the x-axis.

[0108] The cover flap 87 is expediently mounted on the housing arrangement 80 and the support structure 12 in such a way that the cover flap 87 is pivoted by pivoting the housing arrangement 80 in the opposite direction to the pivoting movement of the housing arrangement 80.

[0109] Conveniently, the support structure 12 has several legs 7, by which the support section 1 can be supported against the ground. Between the legs 7, there are free spaces through which a user can reach under the underside 14 of the support section.

[0110] The housing assembly 80 and the cover flap 87 thus provide a cover device that covers the saw blade 2 so that the user cannot touch the saw blade 2 under the table. The cover device can also be referred to as a side saw blade cover. The saw blade 2 is angle and height adjustable. The side saw blade cover consists of several parts that conveniently cover the saw blade in all positions within the adjustable range and prevent a finger from penetrating the saw blade under the table.

[0111] Furthermore, an accessory mounting structure 100 is provided. The accessory mounting structure 100 is shown in the Figure 9 unequipped and in the Figure 10 shown equipped with accessories. The accessory mounting structure 100 can be provided on its own or as part of a table saw, in particular one of the table saws 10, 20, 30 described above.

[0112] The accessory fastening structure 100 is expediently attached to the support section underside 14 and extends vertically downward from the support section underside 14. The accessory fastening structure 100 is essentially plate-shaped and oriented with its plate plane perpendicular to a horizontal direction, for example perpendicular to the y-direction. The accessory fastening structure 100 comprises a plurality of interfaces to which accessory elements for the table saw can be attached, in particular accessory elements that are not currently in use. The accessory fastening structure 100 serves in particular for storing the accessory elements. In the attached state, the accessory elements are expediently freely accessible from the outside and can preferably be removed from the accessory fastening structure 100 without tools.

[0113] By way of example, the accessory fastening structure 100 has one, several or all of the following interfaces: a first interface 101, comprising in particular a locking hook, for fastening a push stick 105, a second interface 102, comprising in particular a locking hook, for fastening the stop unit 50, a third interface 103, comprising in particular a locking hook, for fastening the riving knife 9, a fourth interface 104, comprising in particular a locking hook, for fastening a work center, for example a replacement cartridge, in particular for the safety function, and / or a fifth interface for fastening the saw blade cover.

[0114] The accessory mounting structure 100 preferably serves for the secure storage of the accessories on the table saw. For this purpose, the aforementioned interfaces are integrated into the accessory mounting structure 100. The interfaces expediently have fixing elements. The accessory mounting structure 100 preferably allows the user to easily remove the push stick 105 from the front of the table saw, which is oriented perpendicular to the x-direction.

[0115] The bag is attached to the table top with a screw and there is a side snap fastener to reduce horizontal movement.

[0116] Furthermore, a suction plate 130 is provided. The suction plate 130 is in the Figure 11 unequipped and in the Figure 12shown equipped with accessories. The extraction plate 130 can be provided on its own or as part of a table saw, in particular one of the table saws 10, 20, 30 described above. The extraction plate 130 is expediently arranged below the support section underside 14 and at least partially surrounds the saw blade 2. The extraction plate 130 comprises a suction connection 131 to which a suction hose can be attached for extracting dust generated during sawing.

[0117] Advantageously, the suction plate 130 comprises, on its side facing away from the saw blade 2, a first interface 141 for a replacement saw blade 142 as well as further interfaces for fastening accessory elements 135, in particular tools for assembling and disassembling the saw blade 2, 142 and the expansion wedge and / or riving knife 9. Preferably, at least one accessory element 135 represents a part of the first interface 141.

[0118] In the present extraction plate, which can also be referred to as an extraction hood, the function of the extraction plate is extended in that the extraction plate also serves as a spare blade holder and for storing the tools for assembling and disassembling the saw blade and the expansion wedge.

Claims

1. Bench saw (20), comprising a lay-on section (1) for laying on a workpiece (11), a saw blade (2), and a stop unit (50), in particular an angle stop, for guiding and / or for the feed of a workpiece to the saw blade (2), wherein the stop unit (50) comprises a stop arm (55) which extends in a longitudinal direction (54) for the contact of the workpiece, wherein the stop arm (55) comprises a main section (51) which is manufactured from a first material and which extends over more than half the longitudinal extension of the stop arm (55), and at least one second end section (52) which is arranged on an end of the main section (51) which is located in the longitudinal direction (54), said end section being able to come into contact with the saw blade (2) given a feed of the workpiece towards the saw blade (2), characterized in that the at least one end section (52) is manufactured from a second material, wherein the bench saw (20) is configured to carry out a safety function, in particular for stopping the saw blade (2) and / or for bringing the saw blade (2) into a safety position, on the basis of an electrical characteristic, in particular of an electrical conductivity, of an object which is in contact with the saw blade (2), wherein the electrical characteristic, in particular the electrical conductivity of the second material of the end section (2) is such that the bench saw (20) does not carry out the safety function given a contact of the saw blade (2) with the end section (52).

2. Bench saw (20) according to claim 1, wherein the second material has a different conductivity than the first material.

3. Bench saw (20) according to claim 1 or 2, wherein the first material is metal and / or the second material is plastic.

4. Bench saw (20) according to one of the preceding claims, wherein the at least one end section (52) is attached to the main section (51) in a removable manner.

5. Bench saw (20) according to one of the preceding claims, wherein the at least one end section (52) is stuck into and / or onto a face side of the main section (51).

6. Bench saw (20) according to one of the preceding claims, wherein the main section (51) is an extrusion profile and / or the end section (52) a plastic cap.

7. Bench saw (20) according to one of the preceding claims, wherein the second material has a lower electrical conductivity than the first material.

8. Bench saw (20) according to one of the preceding claims, wherein the second material has a lower electrical conductivity than the human body.

9. Bench saw (20) according to one of the preceding claims, wherein the stop arm (55) at both ends which are located in the longitudinal direction comprises an end section (52), so that the stop arm (55) comprises two end sections (52), wherein expediently each end section (52) is designed as a plastic cap.

10. Bench saw (20) according to one of the preceding claims, wherein the stop arm (55) further comprises a cover layer (53) which is arranged at a longitudinal side of the stop arm (55) and is made from a material that does not trigger the safety function when contacting the saw blade (2).

11. Bench saw (20) according to a preceding claim, comprising a support structure (12) with a lay-on surface (8) for laying on the workpiece (11) on machining the workpiece (11) with the saw blade (2), as well as the stop unit (50) for guiding and / or for the feed of the workpiece to the saw blade (2), wherein the stop unit (50) comprises a bearing section (67) which is engaged with a guide element (6) of the bench saw (20), in order to thus provide a movable mounting of the stop unit (12) relative to the support structure (12) along the guide element (6), wherein the guide element (6) is arranged offset to the bottom relative to the lay-on surface (8).

12. Bench saw (20) according to claim 11, wherein the bearing section (67) comprises rollers (57, 58), via which the bearing section (67) is movably mounted relative to the support section (12), wherein at least two of the rollers (57, 58) are aligned to one another in different spatial directions.

13. Bench saw (20) according to claim 11 or 12, wherein each guide element (6) is designed as a rail element which runs in the horizontal direction and / or each guide element (6) provides a groove, in particular a V-groove, which runs in the horizontal direction.

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