Abstract: A chemical mechanical polishing fastening device includes an annular base and a fastening ring. The annular base has a first combining plane, a first inner annular plane, a first jointing plane, and a second inner annular plane. The diameter of the first inner annular plane is greater than that of the second inner annular plane. Two sides of the first inner annular base are connected to the first combining plane and the first jointing plane. Two sides of the first jointing plane are connected to the first inner annular plane and the second inner annular plane. The fastening ring has a second combining plane and an inner annular flange protruded from the second combining plane. The inner annular flange has an outer annular wall to be combined with the first inner annular plane and a top plane to be combined with the first jointing plane.

Abstract: A retainer ring for a chemical-mechanical polishing device. The ring prevents damage that occur during polishing work and being usable in stable fashion up until a predetermined lifespan has elapsed, by ensuring that a first ring body mounted on the chemical-mechanical polishing device and a second ring body making contact with a polishing pad are firmly coupled together by means of securing bodies which pass through coupling holes in the first ring body and are coupled to recessed coupling parts in the second ring body, and also by means of adhesive parts which are provided in the coupling holes or the recessed coupling parts and adhere and secure the securing bodies.

Abstract: A method of conditioning a surface of a polishing pad is used for conditioning a polishing pad on a polishing table for polishing a thin film formed on a surface of a substrate. The conditioning method includes bringing a dresser into contact with the polishing pad, and conditioning the polishing pad by moving the dresser between a central part of the polishing pad and an outer circumferential part of the polishing pad. A moving speed of the dresser at a predetermined area of the polishing pad is higher than a standard moving speed of the dresser at the predetermined area of the polishing pad.

Abstract: An apparatus for polishing a semiconductor wafer using a pad resurfacing arm and an apparatus therefor are disclosed. Embodiments may include providing a semiconductor wafer on a chemical mechanical polishing (CMP) tool, the CMP tool including a polish pad and a pad resurfacing arm which includes a pad cleaning part, a pad conditioning part, and a slurry dispensing part, dispensing a slurry to the polish pad utilizing the pad resurfacing arm, and polishing the semiconductor wafer utilizing the polish pad.

Abstract: A method for distributing a coolant to a grinding site of a grinding wheel, including rotating the grinding wheel, injecting the coolant in an inlet of the grinding wheel disposed proximate to an axis of rotation of the grinding wheel, moving the coolant fluid from the inlet along a plurality of internal grooves of the grinding wheel outwardly towards a plurality of outlets, and expelling the coolant outwardly from the plurality of outlets at an angle of at most 15 degrees with respect to a tangent to a circumference of the grinding wheel at the outlet.

Abstract: A method of shot peening according to the present invention includes: placing a jig having an appropriate dimension at one face side of a stamped workpiece; and performing shot peening on another face side of the workpiece in a state where the jig is placed at the one face side of the workpiece, and conforming the workpiece to the jig. At this time, the shot peening may be performed in such a way that residual stresses in the inner side and the outer side of the curved part of the workpiece will become compressive stresses.

Abstract: An abrasive media blaster assembly includes a container to hold at least one abrasive media, an external air source to provide a compressed air supply, a reservoir to hold water and rust inhibitor solution and a venturi blaster gun. The venturi blaster gun comprises an exterior nozzle, a media blaster block and a trigger with a handle. The fittings in the media blaster block create a venturi effect and draw the water and rust inhibitor solution so as for it to mix with the abrasive media where the dustless blaster sprays the mix to remove surface finishes from a metal surface and simultaneously provides a rust inhibitor to the surface, thereby allowing the device to be capable of performing any one, two or all of dry media blasting, slurry blasting, and water blasting.

Abstract: The purpose of the present invention is to provide a plating stripping device that is capable of quickly stripping plating from used plated magnets without reducing the weights of the recovered magnets and recycling the magnets to manufacture new magnets. To solve this problem, the present invention provides a plating stripping device characterized by being equipped with an abrasive projection unit for projecting an abrasive to a plated magnet, a magnet fixing unit for fixing the magnet, and a motor for rotating either the magnet fixing unit or the abrasive projection unit, and characterized in that the magnet fixing unit has a movable mechanism for changing the surface of the magnet that directly faces the abrasive projection unit.

Abstract: A wood-based blasting material is formed for introduction into a blasting fluid by mixing high-density pellet particles of various sizes. The pellet particles are formed from sawdust or fiber pressed under high pressure, resulting in brittle pellets. The pellets may then be crumbled and screened into particles of an appropriate size. The particles do not disassociate into their constituent materials when mixed with the blasting fluid, and thus maintain their density during use in the abrasive blasting process.

Abstract: In an embodiment, a polycrystalline diamond compact includes a substrate and a preformed polycrystalline diamond table bonded to the substrate. The table includes bonded diamond grains defining interstitial regions. The table includes an upper surface, a back surface bonded to the substrate, and at least one lateral surface extending therebetween. The table includes a first region extending inwardly from the upper surface and the lateral surface. The first region exhibits a first interstitial region concentration and includes at least one interstitial constituent disposed therein, which may be present in at least a residual amount and includes at least one metal carbonate and/or at least one metal oxide. The table includes a second bonding region adjacent to the substrate that extends inwardly from the back surface. The second bonding region exhibits a second interstitial region concentration that is greater than the first interstitial region concentration and includes a metallic infiltrant therein.

Abstract: The invention relates to a grinding wheel (1), preferably for grinding gears. By means of at least one plastic that is poured in, both a ring (2a) lining the bore (2) and the reinforcing layer (2b) are formed in the grinding wheel pores. The plastic that is poured in preferably consists of a potting compound, used in the raw state, made of a 2-component polyurethane system. In order to produce the reinforcement, the grinding wheel (1) is set rotating and, at the same time, a specific quantity of potting compound is poured into the bore (2). An increase in the explosion speed during operation of the grinding wheel (1) is made possible thereby.

Abstract: A backing pad for a power tool having plate-like form and a trapezoid cross-section with a top surface, a larger bottom surface and a slanting circumferential surface connecting the top and bottom surfaces. The backing pad can be connected to a tool shaft of the tool and is adapted for receiving a polishing or sanding material on the bottom surface. The backing pad is provided with a recess and a plurality of holes and channels that creates a predefined air flow between the bottom surface of the backing pad and a working surface. At least one hole ending in an opening is located in an annular outer section of the bottom surface, the annular outer section being located opposite to the slanting circumferential surface of the backing pad. The additional hole is in connection with at least one opening located in the top surface of the backing pad.

Abstract: Methods of forming polycrystalline compacts include subjecting a plurality of grains of hard material interspersed with a catalyst material to high-temperature and high-pressure conditions to form a polycrystalline material having intergranular bonds and interstitial spaces between adjacent grains of the hard material. The catalyst material is disposed in at least some of the interstitial spaces in the polycrystalline material. The methods further comprise substantially removing the catalyst material from the interstitial spaces in at least a portion of the polycrystalline material to form an at least partially leached polycrystalline compact; and removing a portion of the polycrystalline material from which the catalyst material has been substantially removed from the at least partially leached polycrystalline compact. The polycrystalline cutting elements may be secured to a bit body of an earth-boring tool.

Abstract: An adjustable spanner, including a stationary jaw and a movable jaw, suitable to be coupled to the stationary jaw in a plurality of different positions in order to engage objects of different sizes, and adjustable coupling means provided between the stationary jaw and the movable jaw. The adjustable coupling means include a substantially flat base, which is fixed to said stationary jaw and which includes a folded portion laterally embracing the movable jaw, in such a way that the stationary jaw and the movable jaw lay substantially on the same plane.

Abstract: The driver bit according to the present invention includes: a tip on which a cross blade is formed; a torque transmitting part having a polygonal outer circumference; and a locking groove which extends in the circumferential direction between the tip and the torque transmitting part and into which locking balls enter, wherein the tip has four blade forming grooves forming the cross blade, the blade forming grooves are continuous with the locking groove, and the blade forming grooves are arranged so that the blade forming grooves have bottom parts, at which they are connected with the locking groove, located inwardly of the outer circumference of the torque transmitting part, and the center lines are displaced from a line connecting the shaft center with vertex positions of the polygonal outer circumference and a line connecting the shaft center with center positions of sides of the polygonal outer circumference.

Abstract: A socket wrench includes a head unit with two lug members, a tubular shaft, a handle rod, a first spring-loaded member disposed to permit the tubular shaft to be rotatably engaged with the head unit, and a second spring-loaded member disposed to permit the handle rod to be slidably engaged with the tubular shaft. The handle rod has front and rear end segments each having a cavity configured such that when the handle rod is displaced to a forward or rearward position, the second spring-loaded member is engaged therein, and such that when the handle rod is moved away from the forward or rearward position, the second spring-loaded member can slide out of the cavity.

Abstract: A spherical bearing replacement and installation tool, including a removal cup having an open bearing-facing end, a receptacle portion, and a closed base end having a threaded center hole; a removal bolt sized for passage through a through hole in a spherical bearing and threadable insertion into said threaded center hole; a bearing installation clamp assembly including a clamp body portion having a bar disposed between and joining first and second arms, said first arm having a first through hole and said second arm having a second through hole with a threaded bore, said first and second through holes being cylindrical and axially aligned with one another; a staking tool rotationally disposed in said first through hole; and a bearing press rotationally disposed in said second through hole. A method of using the inventive tool is also disclosed.

Abstract: An inner polygonal wrench structure comprises: a wrench handle; and an operating portion, which is connected with an end of the wrench handle and has an operating bottom surface, a plurality of wrench lateral surfaces and a tilt hole, the every two adjacent wrench lateral surfaces is a wrench end angle, the tilt hole is inclined and has a first open and a second open that are corresponding to each other at two ends thereof, wherein the first open and the second open are at different levels, the first open is higher and the second open is lower.

Abstract: A pressurized fluid container for use with a fastener-driving tool, the container having an outer shell defining an inner chamber, having an open neck and an effective height, a closure sealingly engaged on the open neck, and a tube depending from the closure.

Abstract: The self-contained force magnifying chisel disclosed herein includes a chisel portion, a striker, at least a portion of which is disposed within the chisel portion, and a spring, a least a portion of which is disposed within the chisel portion. The spring attaches to both the chisel portion and the striker. When the striker is pulled by a user, the spring stores mechanical energy. When the user releases the striker, the striker impacts on the chisel portion transferring the mechanical energy stored in the spring into a driving force. The force is magnified by a chisel blade on the chisel portion of the self-contained force magnifying chisel and applied to a workpiece.

Abstract: In a hand-held power tool, including a screwdriver or screw drill, which includes a gear, in a gear housing, for driving an output spindle, and a torque clutch associated with the output spindle, a transmission element which is axially displaceable in the direction of a longitudinal center axis of the output spindle, a locking element, which is axially immovable in the direction of the longitudinal center axis and which is movable in a plane transverse to the longitudinal center axis, for activating and deactivating the torque clutch, the locking element enabling, in at least a first operating position, axial displaceability of the transmission element in the direction of the longitudinal center axis to activate the torque clutch, and in at least a second operating position, for at least limiting the axial displaceability of the transmission element to deactivate the torque clutch, in the second operating position of the locking element, the output spindle being at least essentially axially immovable relative

Abstract: A hand tool and bit storage device configured to allow easy storage and access to a wide variety of bits. The hand tool comprises a body portion, a stem portion and a bit interface. The hand tool couples with the storage device. The storage device holds one or more tool frames or bit inserts each comprising a plurality of bits. The bit inserts are deformable to allow easy access to the bits contained therein. In some embodiments, the bit inserts may be locked in the storage device.

Abstract: A hand tool and retainer apparatus includes a hand tool and a retainer. The retainer retains the handles in a storage position. The retainer is manually fitted to a proximal end of the hand tool when a user retains the hand tool in a storage position. The retainer limits pivotal movement of the handles. A latch member of the retainer secures the retainer to the hand tool. When the hand tool is retained in the storage position, a button portion of the latch member is located such that manual depression of the button portion allows the retainer to be manually separated from the hand tool from a proximal end of the hand tool. Separation of the retainer from the hand tool allows the handles of the hand tool to pivot away from one another.

Abstract: Systems and methods related to construction, configuration, and utilization of humanoid robotic systems and aspects thereof are described. A system may include a mobile base, a spine structure, a body structure, and at least one robotic arm, each of which is movably configured to have significant human-scale capabilities in prescribed environments. The one or more robotic arms may be rotatably coupled to the body structure, which may be mechanically associated with the mobile base and spine such that it may be deflectably elevated and rolled relative to the base simultaneously and independently. Aspects of the one or more arms may be counterbalanced with one or more spring-based counterbalancing mechanisms which facilitate backdriveability and payload features.

Abstract: A micromechanical device capable of providing out-of-plane motion and force generation in response to an in-plane strain applied to the device is provided. Embodiments of the present invention comprise one or more islands that are operatively coupled with one or more hinges. The hinges are operative for inducing rotation of the islands when a lateral strain is applied to the structure. In some embodiments, the hinges are also electrically conductive such that they enable electrical communication between the one or more islands and devices external to the structure. Some embodiments of the present invention are particularly well suited for use in biological applications. Some devices in accordance with the present invention are fabricated using conventional planar processes, such as flex-circuit fabrication techniques.

Abstract: In one aspect, a translational parallel manipulator is provided and includes a fixed platform including three guide members. The three guide members include first ends and second ends, and the first ends of the three guide members are all coupled to each other and the second ends of the three guide members are all spaced-apart from each other. The manipulator also includes a movable platform spaced-apart from the fixed platform and three serial subchains coupled between the three guide members and the movable platform. In one aspect, a translational parallel manipulator is provided and includes a fixed platform, a movable platform spaced-apart from the fixed platform, and a plurality of subchains coupled between the fixed platform and the movable platform. At least one of the plurality of subchains includes no more than four one degree-of-freedom joints.

Abstract: A teaching method for an industrial robot may include, while the hand is lifted up and down by the lifting mechanism, detecting, with the first sensor, a position of either the installation unit or a teaching jig to be installed on the installation unit in a vertical direction; while the hand is transferred in the first direction by the transfer mechanism, detecting, with the first sensor, a position of either the installation unit or the teaching jig in the first direction; while the hand is transferred in the first direction by the transfer mechanism, detecting, with the second sensor, a position of either the installation unit or the teaching jig in the first direction; and calculating a position of either the installation unit or the teaching jig in the second direction, in order to teach a position of the transfer object to be installed on the installation unit.

Abstract: A collision avoidance method according to the present invention avoids collision of a robot arm 120 including an upper arm part 122 and a forearm part 124 connected to each other via an elbow part 134 with an obstacle. Movable areas of the upper arm part 122 and the forearm part 124 in a state in which positions of both ends of the robot arm 120 have been fixed are calculated. Intersections of the movable areas with a first line on a boundary surface of an obstacle area including the obstacle are calculated. A collision avoidance range in which the robot arm 120 does not collide against the obstacle area in the movable areas is determined based on the intersections that have been calculated.

Abstract: A robot system using an augmented reality-compatible display, capable of providing information on the status and/or an operation guide of a robot added to an actual image or actual environment, to a user of the robot, so as to improve the efficiency of operations carried out by the user. The robot system includes an actual robot, a controller which controls the actual robot, and an image capturing-displaying device connected to the controller by a wire or by radio. The image capturing-displaying device has a function for capturing an image of a scene including the actual robot and a function for displaying the captured image in real-time. The user can obtain a scene including the actual robot in real-time by directing a camera arranged on the image capturing-displaying device toward the actual robot, and can monitor an augmented reality image.

Abstract: The invention relates to a method for defining a working range (A, A?) in which a robot (3) can guide a tool (7) fastened to the robot. According to the invention, the working range (A, A?) is defined in that a viewing body (K, K?), within which an image-capturing unit (6) captures images, is defined by positioning and/or setting the focal length of the image-capturing unit (6) and the working range (A, A?) is defined in dependence on the lateral boundary (11, 11?).

Abstract: A laminate is directly transferred from a first robot arm that carries the laminate from a bonding chamber to an overlapping chamber, to a second robot arm that carries out the laminate from the overlapping chamber to the outside.

Abstract: A method and apparatus for positioning one component relative to another component. First metrology data may be identified for a first component and second metrology data may be identified for a second component. First locations of first features may be identified on the first component using the first metrology data. Second locations of second features on the second component may be identified using the second metrology data. A transformation may be computed based on the first locations identified and the second locations identified for use in modifying a movement plan of a robotic system for positioning the second component relative to the first component.

Abstract: A state detecting method applied to a mobile device includes: arranging a depth sensor at the bottom of the mobile device, obtaining a detection signal of the depth sensor, and determining if the mobile device is in a lifted state, a tilted state, or an edge-bordering state, based on the numerical value of the detection signal of the depth sensor. The lifted state is associated with the mobile device without contacting with a support surface. The tilted status is associated with one end of the mobile device contacting the support surface and the other end of the mobile device without contacting the support surface. The edge-bordering state is associated with the mobile device located at the edge of the support surface. Accordingly, when the mobile device is in any of the aforementioned states, an appropriate response can be implemented.

Abstract: An apparatus such as a robot capable of performing goal oriented tasks may include one or more touch sensors to receive touch perception feedback on the location of objects and structures within an environment. A fusion engine may be configured to combine touch perception data with other types of sensor data such as data received from an image or distance sensor. The apparatus may combine distance sensor data with touch sensor data using inference models such as Bayesian inference. The touch sensor may be mounted onto an adjustable arm of a robot. The apparatus may use the data it has received from both a touch sensor and distance sensor to build a map of its environment and perform goal oriented tasks such as cleaning or moving objects.

Abstract: An apparatus including a robot arm comprising a wrist, and an end effector. The wrist includes a frame member. The frame member includes a first material having a first coefficient of thermal expansion. The end effector is connected to the wrist at a connection. The end effector is configured to support a substrate thereon. The end effector includes a first member and a second member. At least one of the first and second members has a different second material with a different second coefficient of thermal expansion. The connection includes the first and second members being stationarily attached to each other with a portion of the frame member sandwiched therebetween. The connection is configured to substantially prevent the different respective coefficients of thermal expansion to deflect the end effector relative to the wrist when the end effector and wrist are heated and/or cooled.

Abstract: A horizontal multi-joint robot includes: a first joint capable of swiveling around a first axis; a second joint capable of swiveling around a second axis that is parallel to and spaced apart from the first axis; and a duct connected between the first joint and the second joint. The first joint has a first connecting portion forming a predetermined angle relative to the first axis. The second joint has a second connecting portion forming a predetermined angle relative to the second axis. The duct has a first end and a second end. The first end is connected to the first connecting portion. The second end is connected to the second connecting portion.

Abstract: The invention relates to a knife (10) having a casing (11) in which a blade support (12) can be moved between a safety position in which a blade (17) held on the blade support (12) is in the casing, a cutting position in which the blade (17) projects out of the casing (11), and a blade-change position in which the blade (17) projects out of the casing (11) to a greater extent than in the cutting position, and the knife (10) has an actuator that comprises a handle (13) with which the blade support (12) can be moved. The special feature is that the knife (10) has a latch (16) enabling the blade support (12) to be fixed in the blade-change position in an indirectly or directly releasable manner.

Abstract: Provided is a cutting tool with which an operator can cut a to-be-cut material by grasping a second handle while setting a first handle stably, and in which the first handle can be changed from a stably-set mode to a grippable mode as with the second handle. The cutting tool has a sidewardly-protruding extension component disposed at the base end of the first handle, which is installed so that, with respect to a handle main body of the first handle, it can be freely changed between a transverse position substantially aligned with the axial direction of the pivotal shaft and a longitudinal position aligned with the lengthwise direction of the handle main body, and, a position holding mechanism is disposed between the extension component and the handle main body, for holding the extension component in each position.

Abstract: A personal care device, such as a shaving apparatus, provided with at least one cutting unit (21) comprising an external cutting member (23) and an internal cutting member (22) which is moveable relative to the external cutting member (23) in at least one direction of movement. A virtual skin plane (10) is located on a side of the external cutting member (23) facing away from the internal cutting member (22). The virtual skin plane (10) extends parallel to said direction of movement and parallel to a skin surface when the cutting unit (21) is in an operational position relative to the skin surface. The internal cutting member (22) comprises a plurality of cutting elements (39) each comprising a first cutting edge (50). A projection of the first cutting edge (50) in the virtual skin plane (10) encloses at least a first shearing angle with said direction of movement.

Abstract: A razor cartridge is provided comprising at least one blade having a cutting edge; a blade unit holding the at least one blade; and a guard positioned in front of the blade unit having a fixed end joined to the blade unit and a free end, with a pivot axis between the fixed end and the free end located distally away from the blade unit, wherein the free end pivots about said pivot axis.

Abstract: A razor cartridge is provided comprising at least one blade having a cutting edge; a blade unit holding the at least one blade; and a guard positioned in front of the blade unit having a first portion and a second portion, wherein the first portion has a first fixed end joined to the blade unit and a first free end opposite the first fixed end, and the second portion has a second fixed end, a second free end, and a pivot axis joining the ends, wherein the pivot axis is positioned distally away from the blade unit and the second free end is positioned intermediate the pivot axis and the first free end.

Abstract: Replaceable shaving assemblies are disclosed that include a blade unit, an interface element configured to removably connect the blade unit to a handle, on which the blade unit is pivotably mounted, and an elastomeric element disposed between the blade unit and interface element. Shaving systems including such shaving assemblies are also disclosed, as are methods of using such shaving systems.

Abstract: The invention relates to a razor and a method for producing a razor. In order to provide an improved razor, a razor (1) has a handle (10) having a gripping part (11) and a head part (12) for receiving a blade head (20), and the blade head (20), said blade head being in the form of a bristle head and/or brush head with bristles (29), at least one of the bristles having a razor blade (21).

Abstract: A device for separating products grouped in blister packs having a plurality of pockets comprises a system for identifying the positions of the pockets relative to the edge of the blister pack. The system for identifying the positions of the pockets relative to the edge of the blister pack comprises a three-dimensional profiling device and/or a photometric stereo viewing system.

Abstract: Methods and equipment for cutting products, including food products. Such equipment includes an impeller adapted to be coaxially mounted within an annular-shaped cutting head for rotation about an axis of the cutting head in a rotational direction relative to the cutting head. The impeller includes a base and ring spaced axially from each other, at least a first intermediate plate disposed between the base and the ring so as to define at least first and second tier levels within the impeller, and paddles disposed between the base and the ring and within the first and second tier levels. The first intermediate plate has an opening therein that defines a passage between the first and second tier levels. The impeller further has pockets defined by and between immediately adjacent pairs of paddles within each tier level.

Abstract: A transverse cutting roller 1 for the transverse cutting of a flat product moving in a transport direction, in particular a viscous foodstuff, such as industrially produced cheese 14, wherein a transverse cutting blade 3, which bridges the product, which is intended to be cut, transversely to the transport direction, is held on a carrier shaft 2 by a plurality of axially spaced blade carriers 4 mounted on the carrier shaft 2, wherein each blade carrier has at least one carrier element 7, which extends radially outward with respect to the rotational axis A of the carrier shaft 2 when the blade carrier 4 is installed, wherein provided on the outer end of each carrier element 7 is a blade attachment section 5, on which the strip-type blade is detachably attached so as to be radially spaced from the carrier shaft 2.

Abstract: The invention relates to a device for the comminution of foodstuffs, having a base part which has a receptacle for a cutting part and to which an actuation part is articulatedly fixable such that the actuation part can be pivoted toward the cutting part in order to push through food items for comminution. The device is characterized in that a drive device for driving rotary cutters in rotation is provided, which drive device is articulatedly fixable or fixed, in exchange for the actuation part, to the base part.

Abstract: The invention relates to a food comminution device which has a base part, a first comminution tool, at least one further comminution tool and a collecting container for comminuted food items. The food comminution device is characterized in that at least one comminution tool or at least a part of one of the comminution tools is detachably fixed or fixable to the base part, and in that, preferably, the collecting container can be arranged in the base part selectively in a first position, in which said collecting container collects food items comminuted by way of the first comminution tool, or in a second position, which differs from the first position and in which said collecting container collects the food items comminuted by way of the further comminution tool.

Abstract: The invention relates to a food comminution device having a base part, which bears a cutting part, and having an actuation part, which actuation part is articulatedly fixed to the base part and can be pivoted from a loading position toward the cutting part into a closed position in order to push food items for comminution through the cutting part and can subsequently be pivoted from the closed position into the loading position again.

Abstract: A device for cutting up timber parts. The device comprises a cross conveyor and a longitudinal conveyor which are arranged one behind the other in a direction of conveyance of the timber parts. The device further comprises at least one cross-cut sawing station which is provided upstream of the longitudinal conveyor and comprises a plurality of cross-cut saws. The cross conveyor is provided with conveyor elements upstream of the cross-cut sawing station, the conveyor elements being movable in a first direction. Each of the conveyor elements forms together with a respective one of the plurality of cross-cut saws a common structural unit. The common structural units are individually movable in a second direction transversely to the first direction. The conveyor elements are provided with fixing elements for securing the timber parts on the conveyor elements, and are movable forwards in the first direction and backwards opposite the first direction.