Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
  • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
  • B23Q1/25—Movable or adjustable work or tool supports
  • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
  • B23Q1/50—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism
  • B23Q1/54—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only
  • B23Q1/5468—Movable or adjustable work or tool supports using particular mechanisms with rotating pairs only, the rotating pairs being the first two elements of the mechanism two rotating pairs only a single rotating pair followed parallelly by a single rotating pair
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
  • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
  • B27G19/02—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for circular saws
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/606—Interrelated tool actuating means and guard means
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/768—Rotatable disc tool pair or tool and carrier
  • Y10T83/7734—With guard for tool
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/768—Rotatable disc tool pair or tool and carrier
  • Y10T83/7755—Carrier for rotatable tool movable during cutting
  • Y10T83/7763—Tool carrier reciprocable rectilinearly
  • Y10T83/7784—With means to rotate tool
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/768—Rotatable disc tool pair or tool and carrier
  • Y10T83/7755—Carrier for rotatable tool movable during cutting
  • Y10T83/7788—Tool carrier oscillated or rotated

Definitions

• the object of the present invention is to reduce disad ⁇ vantages mentioned and provide an efficiently operating device for automatic rotation of the element and there ⁇ by change of the position of the guard relative to the arm in dependence upon the pivoting of the arm relative to the body, which device should be relatively uncompli ⁇ cated and require small space.
• Fig 1 is a perspective view of the sawing machine from the upper side thereof, the guard for the saw tool having been omitted,
• fig 2 is a perspective view of the sawing machine viewed in the opposite direction compared to fig 1 ,
• fig 4 a section through the pivotable arm parallel to its plane of pivoting, it being remarked that the view is hig diagrammatical and has been simplified a.o. by omitting detai otherwise appearing from fig 3; the view illustrates the fluid motor built into the arm and the fluid supply thereof,
• Wheels 8 are, apart from their rotational ability, static-- narily arranged on carriage 1 whereas wheels 7 intended for location on the other side of rail 9 may be provided on eccentrics in such a way that one may by means of handle 10 appearing in fig 1 move the wheels 7 towards and away from the two other wheels 8 by rotating the eccentrics in suitable bearings provided on carriage T .
• carriage 1 shall be removable from rail 9 in its transverse direction when wheels 7 are maximally moved away from wheels 8.
• rail 9 may be secured to an underlayer 11, e.g. a wall surface, by means of support members 12 secured to wall surface 11 by means of expansion-shell bolts or the like and comprising means projecting into the T-shaped groove 13 of rail 9 in order to connect the support members 12 to rail 9.
• Member 15 which accordingly has the character of shaft, is hollow and internally therein there is a channel 20 for supply of pressurized fluid to fluid motor 19. Within sleeve shaft 15, there is also a second channel 21 for discharging return fluid from motor 19. These two channels 20 and 21 are delimited from each other by means of a sleeve 22 arranged within sleeve shaft 15. Channel 20 is located internally in sleeve 22 whereas channel 21 is located externally thereof and, thus, ringshaped. Sleeve 22 and sleeve shaft 15 adjoin sealingly to each other at 23 at the projecting end portion 16 of sleeve shaft 15.
• sleeve 22 comprises one or more openings 24, through which fluid may flow radially outwardly to a space 25 between sleeve 22 and sleeve shaft 1 and then further radially-outwardly through one or more openings 26 in sleeve shaft 15. Openings 26 may open into an annular circumferential recess in the sleeve shaft and fluid flowing thereto flows further on into a further channel 28 in arm 3. Recess 27 is on both sides surrounded by sealings acting between sleeve shaft 15 and the wall of the cavity in arm 3, which receives sleeve shaft 15. The end of sleeve 22 projecting out of housing through opening 17 is closed, e.g. by means of a plug 29. The space 25 is closed in the direction outwardly from housing 14 by means of a sealing between sleeve 22 and sleeve shaft T5 or by means of a part 30 which will be described more in detail hereinafter.
• Channel 20 communicates with a fluid inlet opening 31 provided in housing 14. This opening communicates with channel 20 by one or more radial openings 32 in sleeve 22.
• Sleeve 22 may comprise an annular circumferential recess 33 in the area of openings 32.
• Sleeve 22 co-opera ⁇ tes at 34 sealingly with an internal surface of sleeve shaft 15 or as in the embodiment, with an internal sur ⁇ face of housing 14.
• the end of sleeve 22 turned away from arm 3 is closed, e.g. by means of a plug 35.
• sleeve 22 may comprise a radial flange 36 taking support against a shoulder 37 of the housing for limiting movement of sleeve 22 in the direction to the left in fig 3.
• Means for pivoting arm 3 relative to body 14 comprise a gear rim 38 connected to the arm and located radially inwardly of a portion of the housing and radially outwardl of sleeve shaft 15.
• This gear rim is formed on an annular part 39, which is attached, e.g. by means of bolts, to arm 3.
• Part 39 adjoins sealingly and supporting to sleeve shaft 15.
• Gear rim 38 has the character of a worm wheel and is in engagement with a worm gear not illustrated and attached to an axle 40 (fig 1) rotatably journalled to carriage body 1 and comprising a member 41 for connecti to a key, by means of which axle 40 and thereby the worm gear may be rotated so as to rotate part 39 and accordingl pivot arm 3 relative to housing 14.
• Sleeve shaft 15 has one or more openings 44 enabling communica ⁇ tion between space 43 and channel 21, which via a radial opening 45 is in communication with an opening 46 for discharge of return fluid from the machine. Openings 31 and 46 are connected via suitable conduits to a pressu ⁇ rized fluid source.
• Gears 47 and 48 are located in a space 51 in arm 3 and when fluid via channel 28 flows into space 51, this fluid will hit the gears in their engagement area so as to cause the gears to rotate and thus, gear 47 causes spindle 4 to rotate. The fluid then passes out of space 51 and is returned in the previously described way via channel 42 in arm 3. Space 51 is closed outwardly by means of a cover plate 52.
• an element 53 is arranged, which comprises an annular portion 54 as well as a carrying flange 55, which is fixed to two holder plates 56, 57, which are secured to each other and carrying flange 55 by means of bolts or the like so that carrying flange 55 becomes located between the holder plates and so that these will be loca ⁇ ted mutually spaced.
• These holder plates are intended to hold a cover like guard 58 designed to cover for instanc about half ways the saw tool 59 indicated with dashed lines in fig 6.
• the device is such that a wall 60 of guard 58 is adapted to be received between holder plates 56 and 57 as appears from the section in fig 7.
• This wall 60 of the blade guard may comprise projections 61 located at either sides of plate 57 and having the purpose to prevent movement of guard 58 perpendicularly to the longi ⁇ tudinal extent of plate 57.
• Plate 56 will be received within -the cover like guard 58 and the distance between side walls 60 and 62 of the guard is such that also saw blade 59 will be received between the side walls as ap ⁇ pears from fig 7.
• Suitable locking means for instance screws, tension springs or the like (not illustrated in the drawings) are used for avoiding inadvertent movement of guard 58 out of the engagement with holder plates 56, 57 in their longitudinal direction.
• Element 53 is rotatable relative to arm 3 for changing the position of holder plates 56, 57 and accordingly guard 58 relative to arm 3 in dependence upon the pivoting po ⁇ sition of the arm relative to carriage 1.
• Element 53 is rotatable about the same axis as spindle 4 and annular portion 54 of the element surrounds spindle 4 as appears from fig 3.
• a ring 63 is by means of screws secured agains rotation relative to arm 3 and acts as locallizing means for rotatable element 53.
• Radially inside ring 63 a bea ⁇ ring 54 is arranged to cooperate with spindle 4.
• a locking ring 65 retains the bearing in place and further, there is between spindle 4 and arm 3 a sealing 66 on one side of the bearing and a further sealing 67 between spindle 4 and ring 63 on the other side of the bearing.
• a device for automatic rotation of element 53 and accordingly change of the position of guard 58 relative to arm 3 depending upon rotation thereof relative to carriage 1 comprises the previously mentioned part 30 secured against rotation relative to the body and located in the area of axis 2 of arm 3 and means 60 for such mechanical force trans ⁇ mission from this part 30 to element 53 that when arm 3 is pivoted relative to carriage 1 in a first direction the element 53 is simultaneously rotated relative to arm 3 in a direction opposite to this first direction, where ⁇ as when arm 3 is pivoted relative to carriage 1 in the other direction element 53 is simultaneously rotated rela ⁇ tive to arm 3 in a direction opposite to said other direc ⁇ tion.
• Part 30 is arranged internally in the machine and more specifically within a cover plate 69 on the side of the arm facing av/ay from housing 14. Part 30 may be said to be provided within the arm 3 proper.
• Part 30 comprises a circumferential gear rim and has more specifically the character of a gear, which by means of screws 70 is se ⁇ cure to the outer end of sleeve shaft 15.
• the gear has a portion 71 protruding towards housing 14 and abutting against the outer end of sleeve 22 and further adjoining sealingly to the inside of sleeve shaft 15.
• Plug 29 has a thread engaging with an internal thread in sleeve 22 and a widened head supporting against a shoulder on por ⁇ tion 71 of gear 30 on the side facing away from the end of sleeve 22 so that plug 29 tends to draw sleeve 22 to ⁇ wards the left in fig 3.
• Gear 30 and its gear rim are gene ⁇ rally concentric to pivoting axis 2 of arm 3.
• ele ⁇ ment 53 comprises a gear rim 72.
• Transmission means 68 and gear ring 72 of element 53 are located internally in arm 3 behind cover plate 69.
• Transmission means 68 is in the embodiment formed by a gear, which is rotatably arranged in arm 3 about a pin 73 ' .
• Gear 13 engages in the area of 74 with gear 30 and in the area of 75 with gear rim 72 of element 53.
• gears 30 and 68 and ' gear rim 72 have equally large diameters.
• rail 9 is first mounted on the wall or surface to be provided with a saw cut and subsequently machine 1 is applied on the rail, arm 3 being so adjusted that the saw blade is free from the wall surface. Thereafter rotation of the blade is initiated and by pivoting arm 3 the operator may now adjust the desired depth of cut, during which adjustment blade guard 58- always will be in correct posi ⁇ tion relative to the saw blade and wall surface without the operator having to manually readjust the guard. There ⁇ after the operator displaces the machine along rail 9 while a saw cut is being made in the wall surface.
• the rotatable element 53 would in such a case not have any gear rim but instead a corresponding drum, pulley or rope disc. In these latter cases some slippage in the transmission could occur in case the guard accidentally would hit any hindrance, a fact which possibly could be an advantage even if such embodiment could necessitate adjustments of the position of the rotatable element 53.
• said transmis ⁇ sion means is formed by a flexible traction force trans ⁇ mitting element 68a put in a loop about part 30a secured against rotation relative to the body, said part having the character of a toothed wheel, and about the rotatable element 53a likewise having the character of a toothed wheel.
• the toothed belt 68a has more specifically the character of closed loop engaging with components 30a and 53a radially outwardly of their axes of rotation.
• wheels 30, 68 and 53 must not ne ⁇ cessarily have the character of gears; it would be possible to design these wheels so as to engage mutually by fric ⁇ tion, said wheels having on their engagement surfaces friction increasing design or means.
• arm 3 and rotatable element 53 may be rotated unlimitedly turn after turn relative to the body.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Sawing (AREA)
• Processing Of Stones Or Stones Resemblance Materials (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20367268

Family Applications (1)

Country Status (5)

Cited By (1)

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Citations (6)

Family Cites Families (2)

• 1987
  • 1987-01-23 SE SE8700257A patent/SE462961B/sv not_active IP Right Cessation
• 1988
  • 1988-01-22 JP JP63501519A patent/JPH01502971A/ja active Pending
  • 1988-01-22 WO PCT/SE1988/000022 patent/WO1988005370A1/en active IP Right Grant
  • 1988-01-22 US US07/249,921 patent/US4885966A/en not_active Expired - Fee Related
  • 1988-01-22 EP EP19880901478 patent/EP0299048B1/en not_active Expired - Lifetime

Patent Citations (6)

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