EP4217165A1 - System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtung - Google Patents
System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtungInfo
- Publication number
- EP4217165A1 EP4217165A1 EP21777234.2A EP21777234A EP4217165A1 EP 4217165 A1 EP4217165 A1 EP 4217165A1 EP 21777234 A EP21777234 A EP 21777234A EP 4217165 A1 EP4217165 A1 EP 4217165A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- nut
- drive spindle
- fastening
- saw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
- B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
- B27B5/32—Devices for securing circular saw blades to the saw spindle
Definitions
- the present invention relates to a flange device and a method for fastening a saw blade to a drive spindle of a saw device.
- the flange device includes, among other things, a nut that is movably arranged in an interior space of a flange body, the nut enclosing a central screw device that is guided in the drive spindle for the purpose of fastening when the flange device is in a closed state.
- the invention relates to a system for fastening a saw blade to a drive spindle of a sawing device, the system having a proposed flange device, a sawing device and a central screwing device.
- the central screw device of the sawing device can be pressed against a spring in the direction of the flange device, so that it can be received by an interior space of the nut of the flange device in the closed state.
- Sawing devices such as wall saws, are known in the prior art, with which cuts can be made in a substrate or a wall.
- Sawing devices usually have a saw blade as a tool, which performs a rotary movement and thereby makes the cut in the substrate or the wall to be machined.
- the saw blade is fastened to the drive spindle of the sawing device using a saw blade flange or a flange device.
- a disadvantage of existing solutions for these saw blade flanges is that they often have many moving parts, so that assembling and changing the saw blade is very complex and time-consuming.
- the many small parts can easily be lost, which can lead to further loss of time.
- special fasteners such as special screws
- problems can arise if this special screw is lost and a replacement may not be readily available.
- the components of many flange devices known from the prior art are susceptible to dirt, so that a stable, secure and robust attachment of the saw blade to the drive spindle is not always guaranteed.
- a further object of the invention is that the connection between the flange device and the saw blade is resistant to dirt and is stable, robust and safe. In order to reduce the risk of parts being lost when assembling or replacing saw blades, it would be desirable for the flange device to be provided to have as few parts as possible.
- a flange device for fastening a saw blade to a drive spindle of a saw device, the flange device having a centering ring, a nut and a flange body.
- the flange device is characterized in that the flange body forms an outer area of the flange device, with the nut being movably arranged in an interior space of the flange body, with the centering ring being fastened to the flange body with fastening means, and with the nut being a central screw device when the flange device is in a closed state , which is guided in the drive spindle, encloses for the purpose of attachment.
- the central screw device can preferably be referred to as a fastening screw.
- the invention relates to a system for fastening a saw blade to a drive spindle of a sawing device, the system having a proposed flange device, a sawing device and a central screwing device.
- the proposed flange device By using the proposed flange device, it is advantageously possible to dispense with the use of tools or fastening means, such as special screws, which have to be specially kept available.
- the saw blade can be attached to the sawing device in particular by hand, which has the advantage that manual attachment is often carried out with "more sensitivity", so that there is a risk of mechanical damage to the components of the flange device and the sawing device is reduced.
- Tests have shown that the components of the proposed flange device are particularly easy to clean.
- the proposed flange device consists of comparatively few parts, so that it can be assembled particularly easily. In particular, the personnel used for this does not have to be extensively trained.
- the nut is provided as a moving part in the flange device because this facilitates cleaning and maintenance of the system.
- the sawing device is a wall saw.
- the application arises in which a flush cut is to be made in which there is no space between the saw blade and the substrate to be processed for fastening the saw blade.
- the proposed flange device should be able to be used primarily in this application. In this respect, it can preferably also be referred to as a flush cut flange or represents one.
- the sawing device which is preferably also referred to as a “saw” within the meaning of the invention, is preferably set up to make cuts in walls and subsurfaces.
- the cut is produced using a saw blade as a tool, with the saw blade preferably performing a rotational movement about an axis of rotation.
- the axis of rotation preferably coincides with a virtual central axis of a drive spindle of the saw, which is driven by the motor of the saw and transmits rotary motion to the saw blade.
- the saw blade is preferably part of a saw head of the sawing device, with the saw blade preferably being attached to a saw arm and being driven by a drive motor about an axis of rotation.
- the saw arm is pivotable and can be adjusted about a pivot axis by a pivot motor.
- Sawing devices especially wall saws, can also be equipped with a motorized feed unit and a guide sled cooperation.
- the motorized feed unit preferably has a feed motor, the saw head being arranged on the guide carriage and being able to be moved along the guide rail by the feed motor.
- the saw blade is driven about the axis of rotation via a drive motor, a drive spindle and a transmission device which connects the drive spindle to the drive motor in a torque-transmitting manner.
- the saw blade is fastened to the drive spindle with the aid of the flange device.
- the flange device comprises a centering ring, a nut and a flange body, with the flange body and saw blade being connected to one another.
- the centering ring and the flange body are connected to each other via a screw connection.
- On the periphery of the centering ring radially arranged locking screws are provided, which can be screwed into corresponding radial bores with internal threads in the flange body.
- the saw blade can preferably be fixed to the flange body with fixing screws provided on the periphery of the flange body.
- the flange body is preferably also connected to the drive spindle of the sawing device, so that when the saw blade is attached to the flange body of the flange device, the saw blade is driven when the drive spindle rotates.
- the saw blade can be driven in the rotational movements with which processing of the subsurface is made possible.
- the invention relates to a method for fastening a saw blade to a drive spindle of a sawing device, the method comprising the following steps: a) providing a sawing device with a drive spindle, b) providing a central screw device, c) providing a proposed flange device, wherein a nut of the flange device in an open state, which is the starting point for the fastening method, is essentially completely accommodated in an interior space of a flange body of the flange device and the central screw device is essentially completely arranged inside the drive spindle, d) introducing the central screw device into an internal thread of the nut, as a result of which a driver and the nut of the flange device engage, e) continued screwing of the central screw device into the internal thread of the nut, f) continuing to screw the central screw device into the internal thread of the nut, drawing the nut of the flange device onto the central screw device.
- the driver in the sawing device has cams on its front side, which can engage with pockets on the back of the nut of the flange device. This preferably occurs in response to the central screw device being inserted into an internal thread of the nut.
- the fastening screw is preferably screwed further into the internal thread of the nut of the flange device. This allows a sleeve within the saw to be inserted into a gap between the driver and the central screw and compress a first spring.
- the fastening screw is further screwed into the nut, the nut is pulled out backward from the inside of the flange body of the flange device. This pulls the nut onto the mounting bolt.
- the fastening screw and the nut contract, this contraction being supported by the sleeve, the stops and the first spring. It is preferred within the meaning of the invention that the nut is pulled out of the interior of a flange body until a state of attachment between the flange and the saw is established in that a stop is reached and an external thread of the central screw device is essentially completely received in the nut of the flange device is. In other words, a screw connection between the nut of the flange device and the fastening screw is produced in this way.
- the saw blade can be screwed onto a front side of the flange and thus attached to the flange or to the sawing device.
- the invention comprises the following method steps: a) providing a sawing device with a drive spindle, b) providing a central screw device, c) providing a proposed flange device, with a nut of the flange device in an open state, the starting point for the fastening tion method is essentially completely accommodated in an interior space of a flange body of the flange device and the central screw device is arranged essentially completely inside the drive spindle, d) inserting the central screw device into an internal thread of the nut, whereby cams on the end face of a driver with recesses on the back of the nut, e) continuing to screw the central screw into the internal threads of the nut, thereby inserting a sleeve into a gap between the driver and the central screw and compressing a first spring, f) continuing to screw the central screw into place into the internal thread of the nut, whereby the nut is pulled out of the interior of a flange body until a closed state
- the sleeve in this closed state is essentially completely accommodated in a gap formed between the central screw device and the driver and the first spring is in a loaded state.
- the closed state preferably corresponds to the state in which the saw blade can be attached to the sawing device through the intermediary of the flange. For the purposes of the invention, it will therefore also be referred to as the fastening state.
- the nut of the flange device interacts with the fastening screw in order to establish a connection.
- the flange device is first brought into spatial proximity to the drive spindle of the sawing device.
- the nut is completely withdrawn in the interior of the flange body and a gap is formed between the nut and the fastening screw.
- the central screw device is preferably also designed to be movable and can move in a lateral direction in an interior space that is formed by the drive spindle. In other words, the fastening device can move forwards (towards the flange device) and backwards (towards away from the flange device).
- the fastening screw comprises a screw head which forms a stop up to which the screw can move into the interior space of the drive spindle.
- the fastening screw In the non-fastened state, ie in the “opened” state within the meaning of the invention, the fastening screw is not completely driven into the interior space of the fastening screw.
- the screw In a next step, the screw is moved in the direction of the flange device.
- the fastening screw preferably moves into the nut of the flange device. It is also preferred within the meaning of the invention that the screw is screwed into the internal thread of the nut--for example by about 2 turns. This results in a first loose fastening of the fastening screw within the nut.
- the screw is surrounded by a driver which, in this step of the fastening process, moves forward with the screw towards the flange device.
- the driver includes cams, ie protuberances that can interact with pockets on the back of the nut.
- the back of the nut is preferably in the direction of the sawing device when it is being fastened.
- the back of the nut may include five pockets, but there may be any number of pockets or recesses distributed around the circumference of the nut. It is also possible, for example, to have 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 pockets on the periphery of the back of the nut in order to interact with the cams on the face of the driver.
- the end face of the driver is preferably aligned in the direction of the flange device. It is preferred within the meaning of the invention that a number of cams of the driver corresponds to a number of pockets on the back of the nut.
- the recesses or pockets preferably have inclined planes, with the help of which the cams can slide into the pockets particularly easily. When the cams are in the pockets, they assist in the connection between the saw assembly and the flange assembly. It is particularly preferred within the meaning of the invention that the cams and the pockets with which the cams interact are set up to block relative movement of the drive spindle of the saw.
- a sleeve which surrounds the fastening screw and is connected to the fastening screw via a thread, can penetrate into this gap or hollow space.
- the driver and the sleeve overlap in a stop area. In this stop area, a protruding element in the rear area of the driver engages in a snap device of the sleeve, so that a connection is created between the driver and the sleeve.
- the snap device is preferably present in a front area of the sleeve, so that the driver and the sleeve have a minimal overlap due to the arrangement of the protruding element and the snap device at the beginning of the fastening or assembly process, the overlap preferably extending from the stop area between the driver and the sleeve is formed.
- the snap connection between driver and sleeve prevents the fastening screw from being pulled out of the drive spindle any further.
- the fastening screw which is connected to the sleeve, is screwed further into the nut, ie the screw is pushed further “forward” in the direction of the flange device.
- the sleeve follows this movement, with the sleeve being pushed in particular into the interior space between the screw and the driver until the sleeve - apart from a rear area of the sleeve - is almost completely in the cavity or the gap arranged between driver and fastening screw. In other words, the sleeve is received almost completely by the driver or its interior. It is preferred within the meaning of the invention that the sleeve can be pressed in and/or glued in place.
- the sleeve is preferably surrounded by a spring, the spring preferably being referred to as the “first spring” within the meaning of the invention.
- the spring is spaced sufficiently from the sleeve that the spring also surrounds the tang when the sleeve is slid into the tang during the fastening or assembly process.
- the inner diameter of the first spring is larger than an outer diameter of a rear area of the driver, so that the first spring surrounds this rear area of the driver at the end of the assembly process, when the flange device is attached to the drive spindle or the sawing device.
- the first spring is in an unloaded state at the beginning of the assembly process, while it is compressed or pushed together during assembly of the flange device.
- the flange device is attached to the sawing device, it is in a loaded or tensioned state in which it is preferably set up to store a specific spring or tension energy.
- the spring is pushed forwards by the rear area of the sleeve and is thus loaded.
- This compression of the first spring preferably takes place in connection with the screwing of the fastening screw into the nut of the flange device. Since the nut is designed to be movable in the lateral direction within the flange body of the flange device, the nut moves backwards in the hollow interior of the flange body and thus leaves—turn by turn—the interior space of the flange device. At the end of the assembly process, the nut is approximately halfway out of the interior of the flange body of the flange assembly. A further exit is prevented by a stop, which is formed between protruding elements of the nut and the flange body. It is preferred within the meaning of the invention that the stop is in spatial proximity to the drive spindle.
- the nut, the fastening screw, the driver, the first spring and the sleeve are pressed together or screwed together by the fastening or assembly method.
- Tests have shown that the proposed method with the proposed flange device and the proposed sawing system can provide a particularly stable, secure, easy-to-clean fastening option for a flange or a saw blade on a sawing device or its drive spindle.
- the flange device can be in a closed state and in an open state.
- the saw blade may be fixed to the flange device, while in the open condition of the flange device the saw blade is preferably separate from the flange device.
- the fastening screw is movably arranged in the saw.
- it can be pressed in the direction of the flange device against a spring, which is referred to as the “second spring” within the meaning of the invention.
- a front portion of the fastening screw protrudes from the sawing device for a length l, this part protruding from the saw being received by the internal thread of the nut of the flange device.
- this preferably means that a front area of the fastening screw does not end flush with the front or receiving side of the sawing device, but protrudes beyond this front side or protrudes from it.
- the surface of the sawing device that is in contact with the flange device when it is being fastened is referred to as the “front or receiving side of the sawing device”.
- the front or receiving side is preferably designed to be essentially planar or flat.
- the fastening screw terminates essentially flush with a receiving side of the sawing device when the flange device is in an open state, while the fastening screw is pulled out of the sawing device by the nut in a closed state.
- the open state preferably represents the starting point of the fastening and assembly method, which was explained above in the text and which is preferably also referred to as the "closing method" within the meaning of the invention. It It is preferred within the meaning of the invention that the protruding, front area of the fastening screw is received by the nut of the flange device or enclosed by its inner area when the flange device is in the closed state.
- the fastening screw can be screwed into the internal thread of the nut in particular.
- the saw blade can be fastened to the flange device with fastening means, such as screws, with which the saw blade can be screwed to the flange device, in particular the flange body.
- the movably designed nut of the flange device can be moved in the closed state in the direction of the sawing device and in this state encloses the protruding area of the fastening screw.
- This movement in the direction of the saw creates a cavity between the nut and the centering ring of the flange device, which cavity is filled by the nut when the flange device is in the open state. It is preferred within the meaning of the invention that this cavity coincides with the interior of the flange body, in which the nut can move according to the invention.
- the terms "forward” or “backward” are not unclear terms for the person skilled in the art in the context of the present invention.
- front or the spatial direction “forward” preferably correspond to the area of the sawing system in the context of the invention in which the flange device is arranged in the closed state.
- the “back” area or the spatial direction “to the rear” corresponds to the area in which, for example, the head of the fastening screw is located.
- a “backward” movement thus preferably takes place in the direction of the rear region of the fastening screw, while a “forward” movement preferably takes place in the direction of the flange device.
- the nut prefferably be present in the open or open state of the flange device in an essentially flush manner with an upper side and an underside of the flange body in its interior.
- this preferably means that the height of the nut essentially corresponds to the height of the flange body.
- the nut is covered by the centering ring of the flange device.
- the centering ring of the flange device is designed to close off an interior of the flange body, which is preferably also referred to as a cavity, from the outside, so that the nut is not visible from the outside in a preferred embodiment of the invention and from the centering ring is protected. It is preferred within the meaning of the invention that the centering ring is set up to center the saw blade on the flange body of the flange device.
- the nut is arranged between the centering ring of the flange device and the receiving side of the sawing device when the flange device is open, while the nut has moved in the closed state in the direction of the saw and has a cavity with the centering ring of the flange device includes.
- the saw mounting screw and the nut of the flange device can be positioned relative to each other in the open state so that they have no contact with each other, while the nut encloses the mounting screw in the closed state and so on Establishes a connection between the flange device and the saw.
- the enclosing is achieved in particular in that the fastening screw is screwed into the internal thread of the nut.
- a first spring is arranged around the fastening screw in the sawing device and is set up to press the driver onto the nut of the flange device.
- the fastening screw is preferably surrounded by a sleeve.
- a first spring of the system can preferably be arranged outside of this sleeve, but enclosing the fastening screw. This first spring is preferably set up to press the driver onto the nut.
- the spring force of the second spring is preferably used to move the fastening screw.
- the fastening screw can be moved against the second spring in the direction of the flange device, so that a front area of the fastening screw protrudes beyond the front side of the saw, this protruding area of the fastening screw being received or enclosed by the nut of the flange device when the flange device is in the closed state .
- the second spring is arranged next to a sleeve which surrounds the drive spindle.
- This sleeve preferably has a side facing the flange device and a side facing the sawing device. These pages can preferably also be referred to as the front and rear sides of the sleeve.
- the second spring is arranged on the side of the sleeve facing the sawing device, this side corresponding to the side of the sleeve facing away from the flange device.
- first and the second spring have a restoring function and are set up to bring the driver or the fastening screw into their respective starting position.
- the first spring is a stronger or harder spring than the second spring.
- the first spring can have a higher spring rate than the second spring.
- the spring strength of the first spring is the same or essentially the same as the spring strength of the second spring.
- the flange body of the proposed flange device has a centering groove on an outer edge. It is preferred within the meaning of the invention that the centering groove is designed as an annular groove and that the annular groove interacts with elements on the blade guard holder in order to achieve easier hanging of the saw blade and optimal pre-positioning.
- These elements of the blade guard holder can be web strips, for example, which are arranged on an inside of holders for pre-centering.
- sleeves with a collar can be used, in which case the web strips or sleeves can be designed to be continuous or interrupted. The protruding areas of the web strips or sleeves can engage with the annular groove and thus guide the annular groove. In this way, in particular, a pre-centering of the flange device can be effected.
- the flange device is present between a saw arm of the saw device and the saw blade when the flange device is used to attach the saw blade to the saw device.
- the invention also relates in a further aspect to an application of the flange device for fastening a saw blade to a sawing device, the flange device being present between a saw arm of the sawing device and the saw blade in the case of fastening.
- the proposed system will have a proposed flange device, a sawing device and a central screwing device.
- a central Screw device can in particular be a screw, which can also be referred to as "fastening screw” within the meaning of the invention.
- the proposed system can preferably be referred to as a "saw system”.
- the central screw device of the system has a threadless attachment for finding a threaded hole in a nut arranged movably in the flange device. This makes it much easier to bring the nut and fastening screw together, which is particularly advantageous given the large weights that can occur in connection with a sawing device.
- the central screw device can preferably have radial play in the drive spindle of the sawing device. It is preferred within the meaning of the invention that a play width is in a range from 0.1 to 1 mm, preferably in a range from 0.3 to 0.8 mm, more preferably in a range from 0.4 to 0.6 mm and most preferably 0.5 mm. This selection of the clearance width makes it particularly easy to compensate for and easily correct angle errors during assembly or when changing the saw blade.
- the central screw device or the fastening screw is designed as an expansion screw. In this way, an undesired and safety-relevant loosening of the connection between the saw blade and the flange device or between the saw blade and the saw device is effectively prevented.
- a sealing point between the spindle and the central fastening screw becomes leaky and water can be seen escaping if the fastening screw were to become detached from the flange device in an undesired manner.
- the user of the sawing device receives a quick indication that the central screw device may have loosened, so that remedial action can be taken quickly.
- the system can include a splined shaft connection for centering the flange device.
- the splined shaft connection enables a connection and centering between the fastening screw in the spindle of the sawing device, the nut and the flange device.
- the splined shaft connection has a special insertion geometry, with which an improved insertion of the nut into the spindle is made possible.
- the teeth of the splined shaft connection mesh better thanks to the special guide.
- the serration binding has an inner and an outer geometry, the outer geometry being present on the nut and the inner geometry on the spindle. The special insertion geometry helps to insert the nut into the spindle and effectively prevents the parts from jamming.
- the serration enables a particularly robust centering of the flange device and better power transmission compared to conventional flange devices.
- the proposed flange comes without slits, which makes it particularly stable and durable.
- a further advantage of the invention is that the centering and the rotary entrainment take place in the flange, because this increases safety when starting the operation of the sawing device.
- the system has an adjustable blade guard holder.
- One advantage of the proposed system is that the saw blade can be caught by the preferably adjustable blade guard holder. This is often not the case with conventional sawing systems, as are known from the prior art.
- the blade guard holder can be fixed or locked in three different positions with a fixing pin. In particular, the blade guard holder can be adjusted -45 degrees, 0 degrees or +45 degrees in relation to the saw arm. In an unlocked state, the blade guard holder can be adjusted 360 degrees.
- the system can have a water supply which runs essentially centrally through the drive spindle of the sawing device.
- the fastening screw In a rear region of the fastening screw, the fastening screw is surrounded by an annular disk, the disk being fastened between the fastening screw and the drive spindle.
- the disk It is preferred within the meaning of the invention that the disk has recesses on its circumference, with the water required for the water flow being able to flow through these recesses in the disk, among other things, in order to reach the area of the saw blade.
- the supply for the liquid for cooling the saw blade often runs through the blade guard holder of the sawing device.
- the cooling liquid which is preferably cooling water, possibly with additives, can also be used advantageously for rinsing and thus for cleaning the surrounding components of the system . It is particularly preferred within the meaning of the invention that with the liquid through the Water management can be provided, rinsed the teeth of the splined shaft connection and can be kept particularly clean in this way. Tests have shown that the interface between the saw blade and the saw can be cleaned essentially continuously by the water supply running inside the spindle, in particular during operation of the saw.
- the proposed invention manages in particular without parts that can be lost and is particularly easy to maintain and service. In particular, there is no need for subsequent greasing, as is customary with some flange devices that are known from the prior art.
- FIG. 1 View of a preferred embodiment of the proposed
- FIG. 2 view of a preferred embodiment of the proposed
- FIGS. 3 to 6 View of a preferred embodiment of the proposed flush cut flange in an open state
- Figures 7 to 10 View of a preferred embodiment of the proposed flush cut flange in a closed state
- FIGS. 1 and 2 show views of a preferred embodiment of the proposed flange device 1.
- the flange body 7 and the centering ring 5 can be seen in particular in Figures 1 and 2, with the centering ring 5 covering a cavity 8 in which the nut 6 of the flange device 1 may be arranged (open state of the flange device 1).
- FIG. 2 shows the flange device 1 from the side, so that the centering groove 10 running on the circumference of the flange body 7 can be seen.
- FIGS. 1 and 2 show a blade guard holder 14 which can preferably be adjusted in an angular range of 90 degrees or 90°.
- Figures 3 to 6 show views of a preferred embodiment of the proposed flush cut flange 1 in an open state.
- the flange body 7 is shown, which can be fastened to a receiving side 18 of the sawing device 4 .
- a connection between flange body 7 and centering ring 5 is established with fastening means 9 .
- the centering ring 5 covers a cavity 8 in which the nut 6 is located when the flange device 1 is open.
- the fastening screw 3 in the interior of the drive spindle 11 which can rotate about an axis of rotation 21 .
- the fastening screw 3 is surrounded by a sleeve 19 in a central area.
- Springs 16, 17 are arranged in the area of the sleeve 19, with a second spring 17 being set up to press the saw blade 2 onto a substrate to be machined, while the first spring 16 is set up to pull the fastening screw 3 in the direction of the flange device 1 to press.
- the fastening screw 3 is retracted in the sawing device 4 while the nut 6 of the flange device 1 is located in the cavity 8 inside the flange body 7 .
- the nut 6 of the flange device 1 is designed to be movable, while the drive spindle 11 is arranged rigidly in the swivel arm 12 of the saw 4 .
- Figures 7 to 10 show views of a preferred embodiment of the proposed flush cut flange 1 in a closed state.
- the fastening screw 3 is pressed toward the flange device 1 by the first spring 16 so that a front portion of the fastening screw 3 is present in an inner space of the nut 6 .
- the nut 6 surrounds this front portion of the fastening screw 3 to establish a connection between the saw 4 and the flange 1.
- the Nut 6 also moves in the direction of the saw, so that a cavity 8 is created in flange device 1 below centering ring 5 of flange device 1 .
- the spline shaft connection 13 between the nut 6 and the spindle 11 is shown.
- the nut 6 has an outer geometry of the splined shaft connection 13
- the drive spindle 11 has an inner geometry of the splined shaft connection 13 .
- Fig. 11 shows various possible configurations of the flange device 1.
- FIG. 12 shows a sequence of the proposed method for attaching a saw blade 2 to a sawing device 4. This attachment is preferably carried out using a flange device 1, as is proposed in the context of the present invention.
- Fig. 12 is to be read from the bottom up, the bottom Fig. 12a showing the sawing device 4 with a drive spindle 11, the fastening screw 3 and the flange device 1 as provided according to method steps a) - c) of the proposed method.
- a nut 6 of the flange device 1 in an open state which is the starting point for the fastening method, is essentially completely accommodated in an interior space 8 of a flange body 7 of the flange device 1 and the central screw device 3 is essentially completely arranged inside the drive spindle 11 is present.
- the “open state” describes the state of the saw system 20 in which the flange device 1 and the saw 4 are initially separate from one another and can be brought into close proximity to one another in order to fasten the flange 1 to the saw 4 .
- the open state is considered the starting point for the proposed attachment method.
- Fig. 12b the insertion of the central screw device 3 is shown in an internal thread of the nut 6, whereby a driver 22 of the sawing device 4 comes into engagement with the nut 6 of the flange device 1.
- the driver 22 can preferably include cams 23 which engage in pockets in the nut 6 of the flange device 1 .
- the cams 23 are preferably present on the end face of the driver 22, which is opposite the back of the nut 6, on which the pockets are preferably present.
- Fig. 12c shows the continued screwing of the fastening screw 3 into the internal thread of the nut 6 of the flange device 1. It is preferred within the meaning of the invention that a Sleeve 19 of the saw 4 is inserted into a gap between the driver 22 and the central screw device 3 and a first spring 16 is compressed.
- FIG. 12d shows the continued screwing of the central screw device 3 into the internal thread of the nut 6, as a result of which the nut 6 of the flange device 1 is pulled onto the fastening screw 3.
- FIG. 12d It is preferred within the meaning of the invention that the nut 6 is pulled out of the interior of the flange body 7 of the flange device 1 until a closed state or fastening state is established in that a stop is reached and an external thread of the central screw device 3 is essentially completely in the nut 6 of the flange device 1 is received.
- FIG. 13 shows a preferred embodiment of the proposed flush-cut flange 1 , the flange device 1 being arranged in the immediate spatial vicinity of the sawing device 4 .
- the fastening screw 3 is pulled back as far as it goes; the nut 6 of the flange device 1 is essentially completely inside the flange 1 or the flange body 7 .
- This condition is considered the open condition or the starting point of the proposed attachment method.
- the sawing device 4 comprises a drive spindle 11 which surrounds a sleeve 19 and springs (16, 17) and a driver 22 with cams 23.
- the drive spindle 11 can rotate about an axis of rotation 21 which runs centrally through the fastening screw 3 .
- the saw blade 2 (not shown) can be fastened to the flange device 1 with fastening screws 9, other fastening means 9a being provided for establishing a connection between a centering ring 5 and the flange body 7 of the flange 1.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Sawing (AREA)
- Details Of Cutting Devices (AREA)
- Nonmetal Cutting Devices (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20197329.4A EP3970932A1 (de) | 2020-09-22 | 2020-09-22 | System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtung |
| PCT/EP2021/074768 WO2022063587A1 (de) | 2020-09-22 | 2021-09-09 | System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4217165A1 true EP4217165A1 (de) | 2023-08-02 |
| EP4217165B1 EP4217165B1 (de) | 2024-11-06 |
| EP4217165C0 EP4217165C0 (de) | 2024-11-06 |
Family
ID=72613855
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20197329.4A Withdrawn EP3970932A1 (de) | 2020-09-22 | 2020-09-22 | System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtung |
| EP21777234.2A Active EP4217165B1 (de) | 2020-09-22 | 2021-09-09 | System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtung |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20197329.4A Withdrawn EP3970932A1 (de) | 2020-09-22 | 2020-09-22 | System, verfahren und flanschvorrichtung zur befestigung eines sägeblattes an einer antriebsspindel einer sägevorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12275161B2 (de) |
| EP (2) | EP3970932A1 (de) |
| JP (1) | JP7580582B2 (de) |
| CN (1) | CN116034003A (de) |
| WO (1) | WO2022063587A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE463478B (sv) * | 1989-04-10 | 1990-11-26 | Anders Johnsen | Drivanordning |
| DE9002050U1 (de) * | 1990-02-21 | 1990-05-10 | Cedima Diamantwerkzeug- und Maschinenhandelsgesellschaft mbH, 3100 Celle | Schneidvorrichtung mit Kühlwasserzufuhr zu einem Sägeblatt |
| AT396892B (de) * | 1990-12-21 | 1993-12-27 | Schelling & Co | Spann- und wechseleinrichtung für kreissägeblätter |
| EP0569767B1 (de) * | 1992-05-13 | 1996-01-03 | SCHOBER GmbH Werkzeug- und Maschinenbau | Messerhalter |
| SE511905C2 (sv) * | 1997-07-08 | 1999-12-13 | Anders Johnsen | Anordning för fastsättning av två för samfälld rotation kring en axel anordnade enheter |
| SE521638C2 (sv) * | 2001-04-23 | 2003-11-18 | Globe Invent Ab | Metod för bearbetning av ett objekt, maskin och verktygsenhet för utförande av metoden |
| US20060201492A1 (en) * | 2002-03-18 | 2006-09-14 | Anthony Baratta | Methods and apparatus for movable machining tools including for wall saws |
| EP1990146A3 (de) * | 2007-05-09 | 2013-02-27 | Felder KG | Vorrichtung zum Befestigen eines Rotationswerkzeuges |
| TWI613022B (zh) * | 2015-10-02 | 2018-02-01 | 力山工業股份有限公司 | 用於圓鋸機之工件輔助支撐機構 |
| CN207155933U (zh) * | 2017-06-26 | 2018-03-30 | 中国电子科技集团公司第三十八研究所 | 一种快速切割浮空器囊体的装置 |
| EP3501766A1 (de) | 2017-12-22 | 2019-06-26 | HILTI Aktiengesellschaft | Wandsäge mit einer verriegelungseinrichtung |
| CN211360881U (zh) * | 2019-09-24 | 2020-08-28 | 宝钢特钢韶关有限公司 | 一种锯片锁紧装置 |
| US11305452B1 (en) * | 2021-05-25 | 2022-04-19 | Chin-Chin Chang | Power miter saw having bevel lock mechanism |
-
2020
- 2020-09-22 EP EP20197329.4A patent/EP3970932A1/de not_active Withdrawn
-
2021
- 2021-09-09 WO PCT/EP2021/074768 patent/WO2022063587A1/de not_active Ceased
- 2021-09-09 US US18/025,760 patent/US12275161B2/en active Active
- 2021-09-09 JP JP2023515330A patent/JP7580582B2/ja active Active
- 2021-09-09 EP EP21777234.2A patent/EP4217165B1/de active Active
- 2021-09-09 CN CN202180051428.7A patent/CN116034003A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4217165B1 (de) | 2024-11-06 |
| US12275161B2 (en) | 2025-04-15 |
| US20230347545A1 (en) | 2023-11-02 |
| EP4217165C0 (de) | 2024-11-06 |
| CN116034003A (zh) | 2023-04-28 |
| JP2023540362A (ja) | 2023-09-22 |
| EP3970932A1 (de) | 2022-03-23 |
| JP7580582B2 (ja) | 2024-11-11 |
| WO2022063587A1 (de) | 2022-03-31 |
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