EP0053569A1 - Universelle ergonomische Scharfmaschine - Google Patents

Universelle ergonomische Scharfmaschine Download PDF

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Publication number
EP0053569A1
EP0053569A1 EP19810420179 EP81420179A EP0053569A1 EP 0053569 A1 EP0053569 A1 EP 0053569A1 EP 19810420179 EP19810420179 EP 19810420179 EP 81420179 A EP81420179 A EP 81420179A EP 0053569 A1 EP0053569 A1 EP 0053569A1
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EP
European Patent Office
Prior art keywords
carriage
bearing
arm
rotation
machine according
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.)
Withdrawn
Application number
EP19810420179
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English (en)
French (fr)
Inventor
Christian Flayac
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avyac SA
Original Assignee
Avyac SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Avyac SA filed Critical Avyac SA
Publication of EP0053569A1 publication Critical patent/EP0053569A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools

Definitions

  • the invention relates to a universal ergonomic sharpener.
  • a sharpening machine is said to be “universal” when it makes it possible to sharpen, with special accessories, milling cutters of all shapes and sizes, drills, normal or stepped, taps, reamers, prismatic tools for machine tools and all other cutting tools.
  • the frame of the machine supports, on the one hand, means for holding the tool to be sharpened, means resting on a carriage movable longitudinally, itself carried by a carriage displaceable transversely and able to pivot relative to the frame and, on the other hand, a spindle support assembly comprising means for holding, adjusting in position, and driving in rotation of a grinding wheel.
  • This spindle support assembly is, in general, constituted by a vertical column whose vertical position is adjustable relative to the frame, by a support linked to the column, but of adjustable angular position around a vertical axis, and by an arm which, connected to the support with the possibility of adjusting its angular position around 'a horizontal axis, carries a spindle suitable for receiving any type of grinding wheel.
  • the structure of current machines prevents the operator from sitting comfortably, even when it is only a question of monitoring the sharpening, which contributes to increasing fatigue.
  • the dispersion, in various zones of the machine, of the means for controlling the machining movements or of the adjusting means also forces the operator to take uncomfortable positions.
  • the object of the present invention is to provide a universal sharpening machine which considerably reduces operator fatigue and allows the operator to work either standing or sitting, whether right or left handed, disabled or not.
  • This machine is of the type composed of a frame provided with a fixed console and in the form of a tray, of a transverse carriage articulated vertically on the console, the rotation blocking means of which cross the latter, of a longitudinal carriage disposed on the transverse carriage and able to receive means for holding and positioning the tools to be sharpened, a vertical column adjustable in height relative to the frame and carrying a grinding wheel spindle and means for adjusting the angular position of spindle .
  • the articulation bearing of the transverse carriage is arranged at the front and in cantilever with respect to the frame, in the same way as another bearing which, projecting under the console and traversed by the means for blocking the carriage in rotation, pivot form for the end of a lever whose free end, protruding from the console, supports an articulated control panel, while the upper plane of the longitudinal carriage is situated at a distance from the ground between 1 and 1.2 meters, so that the work area is away from the ground by a distance between 1.15 and 1.5 meters
  • the arrangement of the carriages in the immediate vicinity of the operator facilitates their handling, both for adjustments and for sharpening, and their arrangement on a console allows the operator to work in a comfortable, while protected.
  • a console When seated, he can place his legs under this console and be at the same transverse distance from the work area as when he is standing o
  • This advantage combines with that resulting from the vertical position of the work area to considerably improve the position of the operator who works in conditions suited to his morphology, without strain on his muscles, therefore without the risk of painful stiffness
  • control panel articulated on a rotary lever relative to the console
  • this panel can always be placed in the immediate vicinity of the operator, whatever the position of the latter.
  • switchboard can either be placed to the right or to the left of the operator and present, in these two positions, the same distribution of command and control members. the machine, which prevents any operator disturbance following this change of position.
  • the block formed by the spindle and its motor variable speed drive is suspended with the interposition of an angled support, allowing in known manner, angular adjustments around axes, respectively horizontal and vertical, at the free end of a radial arm whose other end is arranged at the upper end of the movable column with, in known manner, the possibility of angular adjustment around the vertical axis.
  • the motorized spindle which has a universal orientation, can thus occupy very many positions, without, however, some of these moving it too far from the operator and obliging the latter to bend down to control the operation by More detailed ment, this arrangement makes it possible to obtain, for all the useful positions, a task-eye distance of the operator of the order of 0.35 meters improving the visual comfort of the operator without having to approach of the task, that is to say a distance of value much lower than that of 0.50 meter obtained with traditional sharpening machines.
  • the means controlling the longitudinal movement of the upper carriage are composed of two flywheels which are arranged laterally on one of the sides of the transverse carriage and on either side of the single flywheel controlling the movements of the latter.
  • the longitudinal carriage comprises, at its anterior end, a bearing for a bent rod, whose vertical branch is adjustable in height and in orientation, and whose horizontal branch supports an adjustable position elbow support.
  • This elbow support is intended to support the operator's elbow or forearm when the operator is performing long operations requiring actuation of the tool during sharpening.
  • the mark of one of the marking means indicating the angular position of the support of spindle around a vertical axis, is produced on a ring which, after unlocking, can pivot at the end of the arm of the column, is connected to means holding it, whatever the angular position of this arm, in the same relative position with the mark of one of the means for locating the angular position of the transverse carriage around an axis vertical.
  • the sharpening machine according to the invention allows, thanks to its structure, the relative arrangement of its components and the concentration, near the operator of its essential means of adjustment and control, to reduce fatigue. of the latter, but also the manufacturing downtime.
  • the doubling of the controls of the longitudinal carriage and the possibility of moving the control panel allows the operator to give these various organs the position that best suits him, whether he himself is right-handed or left-handed, disabled or not, seated or standing.
  • this sharpening machine is composed of a frame 2 comprising a guide bearing 3 for a vertical column 4, means carrying a spindle 6 and a carriage 7 movable transversely and carrying a carriage 8, movable longitudinally.
  • transverse 7 is mounted with the possibility of rotation about a vertical axis x'-x relative to the frame 2.
  • the longitudinal carriage 8, which is intended to receive the means 70 (FIGS. 8 and 9) carrying the tool to be sharpened, can be monolithic or include a false swiveling table facilitating adjustments for certain manufacturing.
  • the articulation bearing 2 allowing the transverse carriage 7 to pivot about the vertical axis x'-x, is arranged in cantilever with respect to the frame 2 in a console 10 projecting from the 'front of this frame. As shown in Figures 8 and 9, this console is semi-circular.
  • the part 12, constituting the bearing itself and which is linked to the console 10 is crossed by a vertical shaft 13 whose lower end 13a, projecting under the console, is threaded and cooperates with the means for controlling the blocking of the transverse carriage in rotation.
  • these means are constituted by a nut 11 secured to a control lever 11a. This lever, which is located below the console, is very accessible to the operator.
  • the stepped upper end 13a of this tree takes support, via a flange 14, on the base 15 of the transverse carriage 7.
  • This base is rotatably mounted relative to the part 12 with the interposition of a bearing 16 whose inner cage is mounted with greasy sliding on said part 12 and is supported on an elastic washer 17, itself supported on the part 12.
  • the shaft 13 is also slidably mounted in a bearing 18, projecting below the console 10, and around which the end 19a of a lever 19 can pivot, supporting, at its other end 19b, a control unit 200 L end 19b, which projects laterally from the console, forms a pivot allowing the housing 20 to rotate on itself by at least 180 °.
  • FIG. 3 shows that the means for guiding in rotation and for locking the transverse carriage 7 form a very compact assembly which makes it possible to give the console 10 a very high vertical position thanks to which it does not disturb the operator when he wishes take a seated working position, in which case his feet can rest on the height-adjustable footrest 21
  • this console allows the operator to place his legs undisturbed beneath him when he wishes to work seated
  • the distance a between the underside and the ground can have a value of the order of 0.85 to 0.95 meters and, in particular, 0.9 meters which is the ideal distance.
  • the compactness of the means for guiding in rotation and for locking the transverse carriage also makes it possible, given the small vertical size given to the two carriages, respectively transverse and longitudinal, to arrange the upper face 22 of the longitudinal carriage 8 at a distance b from the ground of between 1.1 and 1.2 meters 0
  • the work area is thus located at a distance e from the ground (fig.9) between 1.25 and 1.5 meters and of the order of 1m, 35
  • the distance between his eye and the task is of the order of Om, 35, that is to say corresponds substantially to the most comfortable distance for his perception eyepiece, without having to bend over, as is currently the case.
  • Figures 1 to 3 show that the means controlling the longitudinal movements of the carriage 8 are constituted by two flywheels 23a and 23b, arranged on either side of the transverse carriage, and near the anterior edge thereof. These two flywheels are arranged in front of two other flywheels 24a and 24b controlling the transverse movements of the carriage 7.These control means are thus within immediate reach of the operator, whatever the angular position given to the two carriages.
  • the longitudinal carriage comprises, at its anterior free end, a bearing 25 in which is mounted with the possibility of adjustment, both vertical and in orientation, the vertical branch 26a of a bent rod whose horizontal branch 26b supports an elbow support 27 , adjustable in position.
  • This elbow support which can thus occupy various angular or vertical positions relative to the upper face 22 of the longitudinal carriage 8, allows the operator to place his elbow when performing operations requiring manipulation of the tool during its sharpening.
  • Pin 6 forms a block with its variable speed drive motor. It is mounted with the possibility of angular adjustment around a horizontal axis y'-y relative to an angled support 30. The latter is itself mounted with possibility angular adjustment around a worm axis tical z'-z at the free end of an arm 32 carried by the column 4. This arm is also mounted with the possibility of angular adjustment around the vertical axis v'-v of the column 4.
  • the vertical plane containing the axis v'-v of rotation of the column and the vertical axis x'-x of rotation of the transverse carriage is also the transverse vertical median plane of the frame 2 and of the machine.
  • the motorized spindle 6 is integral with a base 33 which, provided with a scale 34, can pivot in a bore 35 formed at the end of the bent support 30.
  • This base is locked in rotation by a threaded rod 36 of which it is integral and the end of which passes through the rear face of the support 30 receives a locking nut 37.
  • This support 30 is itself linked to a base 38 freely rotatably mounted with interposition of bearings 39 on a vertical shaft 40. The lower end of this shaft is shouldered at 40a and is supported, with the interposition of a thrust ball bearing 42, on the lower face of the above-mentioned base "3 8.
  • the rear end of the arm 32 is articulated around a vertical shaft 50, which is mounted to rotate freely with the interposition of suitable bearings, in a part 52, fixed to the end of the column 4 of the frame.
  • the lower end of the shaft 50 is supported at 50a and is supported, with the interposition of a ball bearing 53, on the underside of the aforementioned part 52. of this shaft passes through the arm 32 and has a threaded end 54 intended to cooperate with locking control means constituted in this embodiment by a nut 55 secured to a control arm 56.
  • the shaft 50 is wedged in rotation relative to the arm 32 by a screw 57.
  • the arm 32 comprises means which, whatever its angular position, maintain in the same relative position one of the elements of the scale indicating the angular position of the spindle motorized 6 around the axis z'-z with one of the elements of the scale indicating the angular position of the carriage around the vertical axis x'-x.
  • these means are constituted by a flexible link, such as a metal strip or a cable 62, forming a loop around, respectively, the ring 45 and the part 52, a link whose ends, arranged in grooves, respectively 63 and 64, are fixed by screws 65 and 66.
  • a tensioner 67 placed in the middle of the arm 32, and accessible from the outside, makes it possible to adjust the tension of this link 620 Thanks to this arrangement, and as shown in FIG. 7, when the arm 32 is brought from position A to position B or to position C, the corresponding reference 71 at the zero of the graduation 46 of the ring 45, always keeps the same orientation with respect to its axis of articulation, that is to say remains in a vertical plane P1, P'1, p "1, which is always parallel to the vertical median plane P of the machine, plane containing the mark 72 for the graduation 73 for locating the angular position of the trolley versal 70
  • the vertical displacement means of the column 4 are constituted by a screw 75-nut 76 assembly which is arranged between the vertical axis v'-v of the column and the vertical axis x'-x of rotation of the carriage 2. More specifically, the screw 75 is linked in rotation to a reduction gear 77, itself driven by an electric motor not shown, while the nut 76 is wedged at the end of a projecting arm 78 laterally at the lower end of the column 4 and projecting from the latter in the direction of the axis of rotation of the carriages.
  • the shaft of the electric motor driving the reduction gear 77 is extended at each of its ends by rods 80 which, as shown in FIG. 2, each pass through the corresponding side walls of the frame 2 to receive a handwheel 82.
  • two handwheels, arranged on either side of the frame, allows the operator to carry out all of his manufacturing adjustments while staying on the same side of the machine, therefore without having to move too much.
  • the means for controlling the blocking of the support 30 relative to the arm 32, of the support 30 relative to the column 4 and of the carriage 2 relative to the console 10, means which, in the previous embodiments, consist of a nut actuable by a radial lever, can also be constituted by pneumatic means, an embodiment of which is shown in FIG. 6.
  • These means consist of a cylinder 85 capable of being fixed on the corresponding part of the machine and, by example, at the rear end of the arm 32.
  • This cylinder is divided into two compartments, respectively 86 and 87 by a waterproof membrane 88.
  • the chamber 86 is connected to a source of compressed air, by a pipe leading to the orifi this 89.
  • the chamber 87 contains a piston 90 which is attached by screwing to the threaded end of the corresponding control shaft and, for example, to the end 54 of the shaft 50 controlling the blocking of the rotation of the arm 32.
  • Elastic washers 92 of the "Belleville” type, bearing, on the one hand, on the bottom of the chamber 87 and, on the other hand, under the piston 90, tend to constantly press the latter against the membrane 88 .
  • the membrane 88 transmits the pressure it receives to the piston 90 which compresses the washers 92 and, by controlling the downward movement of the shaft 50, causes the arm 32 to be released. Conversely, as soon as the chamber 86 is no longer supplied with compressed air, the washers 92 become predominant and alone ensure the blocking of the shaft 50. This arrangement guarantees the blocking of the components of the machine in the event of compressed air supply failure.
  • control means which can be arranged on the shaft 50, on the shaft 40 or on the carriage blocking shaft 13, are advantageously actuated from the control unit 200 Under these conditions, all of the means of machine control and adjustment are within immediate reach of the operator, who therefore does not need to move, both for adjustment operations and for sharpening operations.
  • FIGS. 8 to 11 show that the structure of the means carrying the spindle, the cantilevered arrangement of the carriages, the carrying out of double control for the essential adjustment movements and the use of a control box articulated to the end of a lever make it possible to give the machine's organs an infinite number of relative positions, but above all to adapt these positions, on the one hand to the work to be performed and, on the other hand, to the morphology of the operator , whether the latter is valid or disabled, right-handed or left-handed, and whether he wishes to work standing or seated.
  • the operator can operate the tool holder 70 with the right hand having, on his left, the control unit 20 and the steering wheel 23a for longitudinal movement, while, when the machine is in the position shown in Figures 9 and 11, the operator can operate the tool holder 70 with the left hand having, on his right, the housing 20 and the steering wheel 23b.
  • the working area is located approximately 1.35 meters from the ground and 0.35 meters from the operator's eye, that is to say - say in a place allowing the operator to control the operation in progress without having to lean laterally or transversely, which reduces his fatigue, his nervous tension and increases his productivity.
  • the machine of Figures 1 to 11 requires the share. of current operators a modification of working habits so significant that it can lead to refusal to use the machine.
  • the work plan is lowered by an amount sufficient to favor the progressive adaptation of the users, without the distance between the eye and the work area being too large.
  • the distances a, b have values of the order of 0.8 and 1 meter so that the distance c, from the working area to the ground, i.e. between 1.15 and 1.5 meters and preferably around 1.25 meters.
  • the lever 19 carrying the control box 20 is composed of two telescopic elements 19', 19 ".
  • the one 19 ' is articulated below of the control lever 11a so as no longer to be hampered in its rotation by the gussets 10a connecting the console 10 to the frame.
  • the lever 19.1e frame 2 has cut angles 2a.
  • This machine also differs from the previous one by the arrangement of the handwheels 23'a-23'b of the longitudinal carriage 8. Indeed, these are arranged on one side of the transverse carriage 7 and on both sides Another of the single flywheel 24 controlling the movements of the latter.
  • This arrangement which reduces the manufacturing cost by eliminating a flywheel, allows, as in the previous embodiment, to unite all the commands at hand from the operator regardless of the angular position of the carriages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Handcart (AREA)
EP19810420179 1980-12-03 1981-12-02 Universelle ergonomische Scharfmaschine Withdrawn EP0053569A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8026032 1980-12-03
FR8026032A FR2495035A1 (fr) 1980-12-03 1980-12-03 Affuteuse universelle ergonomique

Publications (1)

Publication Number Publication Date
EP0053569A1 true EP0053569A1 (de) 1982-06-09

Family

ID=9248798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810420179 Withdrawn EP0053569A1 (de) 1980-12-03 1981-12-02 Universelle ergonomische Scharfmaschine

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EP (1) EP0053569A1 (de)
FR (1) FR2495035A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547231A1 (fr) * 1983-06-10 1984-12-14 Vilar G Ets Machine d'affutage
CN116214327A (zh) * 2022-12-08 2023-06-06 新清环境技术(连云港)有限公司 一种风电叶片成型粘接平面磨削装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE231430C (de) *
FR493470A (fr) * 1918-11-30 1919-08-09 Pion & Boizot Soc Perfectionnements aux machines à affuter universelles
GB366462A (en) * 1929-09-28 1932-01-25 Cincinnati Milling Machine Co Improvements relating to grinding or abrading machines and to other machine tools
CH267759A (de) * 1948-09-06 1950-04-15 Napoleon Eklund Elias Werkzeugschleifmaschine.
US2539506A (en) * 1946-06-21 1951-01-30 Norton Co Grinding machine
US3164930A (en) * 1961-10-18 1965-01-12 Crosby Spurgeon Tool grinding machine
US3258880A (en) * 1961-09-15 1966-07-05 Garin Maurice Sharpening machine for tool-carrying heads
FR1590187A (de) * 1968-09-25 1970-04-13
DE2647148A1 (de) * 1976-10-19 1978-04-20 Deckel Feinmechanik Michael Werkzeugschleifmaschine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE231430C (de) *
FR493470A (fr) * 1918-11-30 1919-08-09 Pion & Boizot Soc Perfectionnements aux machines à affuter universelles
GB366462A (en) * 1929-09-28 1932-01-25 Cincinnati Milling Machine Co Improvements relating to grinding or abrading machines and to other machine tools
US2539506A (en) * 1946-06-21 1951-01-30 Norton Co Grinding machine
CH267759A (de) * 1948-09-06 1950-04-15 Napoleon Eklund Elias Werkzeugschleifmaschine.
US3258880A (en) * 1961-09-15 1966-07-05 Garin Maurice Sharpening machine for tool-carrying heads
US3164930A (en) * 1961-10-18 1965-01-12 Crosby Spurgeon Tool grinding machine
FR1590187A (de) * 1968-09-25 1970-04-13
DE2647148A1 (de) * 1976-10-19 1978-04-20 Deckel Feinmechanik Michael Werkzeugschleifmaschine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2547231A1 (fr) * 1983-06-10 1984-12-14 Vilar G Ets Machine d'affutage
EP0128829A1 (de) * 1983-06-10 1984-12-19 Etablissements G VILAR Werkzeugschleifmaschine
CN116214327A (zh) * 2022-12-08 2023-06-06 新清环境技术(连云港)有限公司 一种风电叶片成型粘接平面磨削装置
CN116214327B (zh) * 2022-12-08 2023-10-31 新清环境技术(连云港)有限公司 一种风电叶片成型粘接平面磨削装置

Also Published As

Publication number Publication date
FR2495035A1 (fr) 1982-06-04
FR2495035B1 (de) 1984-07-20

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Inventor name: FLAYAC, CHRISTIAN