FR2497703A1 - DEVICE FOR ROTATING WORKPIECES, ESPECIALLY BRAKE LININGS - Google Patents

Abstract

THE INVENTION RELATES TO A DEVICE FOR TURNING PARTS, IN PARTICULAR BRAKE LININGS, WHICH IS DESIGNED TO SUCCEED DUST AND CHIPS WHICH FORM DURING THE TURNING OF THE WORK, IMMEDIATELY NEAR THE TURNING POINT. TO THIS END, TOOL 1 (OR TOOL HOLDER) PRESENTS, IN THE NEARBY OF EDGE 2, IN THE IMMEDIATE PROXIMITY OF THIS, AN INTEGRATED SUCTION PORT 5 WHICH COMMUNICATES WITH A CHANNEL 6 ENDING TO A DEVICE OF ' SUCTION. THANKS TO THIS PROVISION, THE DUST AND CHIPS WHICH FORM DURING THE SHOOTING MAY BE COMPLETELY ASPIRED AND THUS PREVENTED FROM ESCAPING INTO THE ATMOSPHERE. THE INVENTION IS ESPECIALLY SUITABLE FOR INSTALLATIONS FOR TURNING BRAKE LININGS CONTAINING ASBESTOS.

Description

The present invention relates to a device for

  parts, including brake linings.

  During the filming of certain plays, he is often

  that the dust and chips resulting from the

  are sucked up. For example, when turning brake linings that usually contain asbestos, it is essential to vacuum the resulting asbestos dust

  to avoid polluting the atmosphere surrounding the camera.

  As we know, asbestos dust is extremely dangerous

  for health reasons and may cause staff

  called "asbestosis", when it is breathed for a prolonged period of time, and the fact of sucking dust and chips offers the advantage of considerably simplifying

  cleaning operations of the camera and the environment

  Moreover, thanks to this suction, the point of action of the cutting tool can be constantly observed without obstruction. German patent application DE-OS 28 37 873 discloses a device for nrotection against the dust collector for devices for turning brake linings, which is in the form of a bell that caps the entire turning device; this protective bell is connected to a suction device, for example to a vacuum cleaner, which sucks at the same time the chips and the dust and eliminates them by filtering. Because of the importance

  the volume of the protective bell and the fact that it is not

  to close it hermetically in relation to the aircraft

  this dust protection device requires

  high suction capacities, if we really want to eliminate any

  dust and all the chips resulting from the shooting.

  Furthermore, attempts have also been made to provide near the tool a suction pipe, the latter

  surrounding for example the tool in the manner of a cap. This

  The disadvantage of this invention is that it increases the size of the tool, so that the protective cap often has to be removed at locations that are difficult to access. In addition, at the start of the turning apparatus, at the beginning of the cutting procedure, a considerable portion of the protective cap communicates with the surrounding atmosphere in the surface region.

  of suction, so that only a small fraction of the

  existing suction system remains available to

  chips. Thus, this filming equipment also does not

  the assurance that all dust and chips will be sucked throughout the machining process,

  The present invention has set itself the goal of:

  positive for turning nieces, in particular brake linings, which comprises a device for sucking dust and chips that form during the turning and which is -such that during the whole operation, the push-and-go the shavings that form are effectively asoirés, without resulting in

  both a restriction and a calculation of the use of the

same filming.

  To this end, the invention provides for incorporating in the tool and in the tool holder the duct connecting the suction port to the suction device itself, thus avoiding the presence of an ounce.

separate additional component.

  In many cases, the tool holder has the form of a bar at the front end of which is fixed or tightened a tool! cutting. Such an arrangement makes it possible to turn even inaccessible parts of the part. This arrangement is used in particular on the apparatus R to calibrate the linings or the brake disks,

  in order to penetrate with the tool and the tool holders in certain

  some cavities of the niece. In this case, the invention provides for

  place the tool holder in the form of a hollow profile which terminates in the region of the cutting tool with an open section of L. or U. The cutting tool is attached inside the cuverted profile, at one of the branches thereof. In this embodiment of the

  tool holder, the open side of the profile constitutes the vacuum opening

  The inside of the profile forms the suction duct, which is connected to the suction device as appropriate. When

  the Dorte-outii is fixed, for example to an arm of filming, one realizes

  ise at least part of this arm so as to be hollow and

  uses this part of the suction channel, which, on the one hand,

  with the inside of the d-profile of the pr-te-outi! and, on the other,

  for example by a flexible conduit, .av- <zec the suction device.

  The tool holder is, at least in the region of the tool, parallel to the turning surface and perpendicular to the turning device. The open side of the profile in: of the tool holder as well

  turned towards the turning surface, so that this opening of

  It is located almost at the place where the

  and the coels. The cutlet is attached to one of the two

  U branches so that the suction port is

  in the direction in which the dust and chips

  slow. Thus, from the beginning of the diversion operation,

  when the cutting tool attacks the workpiece, for example

  virtually all the suction port is already placed in front of the workpiece, so that when dust and chips are sucked, virtually no fraction of the surrounding air can reduce the power of the machine. suction, is sucked. With this arrangement of the tool holder, dust and chips can be efficiently sucked up and prevented from

escape into the environment.

  Moreover, the integrated construction mode of the tool,

  of the tool holder and the orifice or suction channel is

  that the dimensions of the tool holder are practically

  mented; In addition, it is ensured that the tool is capable of reaching

  inaccessible parts of the room, so that during the entire turning procedure the dust and chips are

effectively evacuated.

  Other features and advantages of the invention are

  from the following description given by way of example

  in no way limiting, with reference to the accompanying drawings in which

  FIG. 1 is a sectional view through a turning tool.

  2 is a schematic side view of an apparatus for rotating the brake linings to which a turning arm has been attached and which comprises a tool holder made according to the invention,

  Figure 3 is a sectional view through the arms of

  swimming and the tool holder of Figure 2; FIG. 4 is a sectional view through the tool holder and FIG. 5 is a plan view on the tool holder of the

figure 3.

  FIG. 1 is a cross-sectional view of a plastic crust-shaped tool, the anterior end of which constitutes the

  cutting edge 2 of the tool. Cutting Edge 2 attacks a cylindrical piece

  than 3 turning in the direction of the arrow P and peel the perimeter

  forming dust and chips 4, which have not been

  only very schematically. As seen in Figure 1,

  the lower face of the tool I is pierced with a suction port

  t i on 5 located. proxying the tran-2-amino acid, indicating the use of an analgesic agent; 6c - in urp;, re dn, I ', nuri 1.: As in the case, the channel of napi ration 6' Atend, inside the tool of turn I and is lorned, by etxell) lt by duilx pierages that. they race one at a time, in a particular angle, obtained from a first part, extending the party to the tool, and then the tool. :: iildl pia tT i {v2 a-cnnant cdain the cor: of the outi. The channel 6 (b) (a), a non-representational feeder, to facilitate the asilization of the suction pipe, it should be manufactured in tlx.p.rt i, auquitl cab a bonnet refertnncn II 'utr the figure I.ait fla aa lower face; the canal d'Espipration 6 as ain: i fer-, on one hand by the body of the tool 1, and on the other hand by 1.irt 1c t Of the pouesires and chleelix 4 which r-etiltó: nt of the turning of the piece are directly attracted, by the ori ice 5, in the eanal 6 and are then eliminated, in the apiratin dispostlif, no

represented by filtering.

  FIG. 2 shows an apparatus 1 for rotating the frets 12, for example of the wheel of a -ahriton. After disassembling the wheel, discovering it. freijn fittings, one

  threads on them the support tube 14 of the apparatus

  age and press it on it. On the support tube 14 is lying

  a turning frame 15, which can be rotated

  tour of the sunport tube at nr.yen of an electric motor 16, piar

  example, through a transnational act of non-repre-

  6entée. The turning frame 15 may furthermore be axially

  on its support tube 14, in the direction td the arrow 3 points PI. The chassin I S coinmorte in hran 17 at the outer extremit4 which is attached i a pjorte-tool 18 pointing in the direction

brake linings 12.

  On the chassis 15 is also mounted

  t i-n 19 analogized by exesmple. an aspiratear do ::: eat iq: e. The aspirating device 19 is connected by means of a pipe 20 with the

  holder or tl create tx 18, as shown schematiq'uevent on the fi

  Fig. 2, Fig. 3 shows in more detail the turning arm 17

attached to the holder 18.

  The pre-rut - uttil 18, mopeorte urn ube 21 which is fixed in the turning arm 17 and tooth axis is riaraille to the axis of rotation

  of the turning frame 15. The connecting pipe 20 mentioned above

  The other end of the tube 21 is welded to an adjustable tube 22 oriented towards the brake linings 12 and opens into a radial opening 23 of an adjusting cylinder 24 that can be moved. axially in the

  adjustment tubes 22. The radial opening 23 communicates with the opening

  axial direction 25 of the adjusting cylinder 24, the mouth of which is directed towards the brake linings. The adjusting cylinder 24 can be moved by means of a micrometer screw 26, which has been shown only schematically, in the direction of the axis of the adjustment tube. At the end of the adjusting cylinder, at the mouth of the axial opening 25 is fixed a suction connection 27 in the form of box, whose longitudinal axis is parallel to the axis of rotation of the arm 17. The connection 7 is in the form of a rectangular hollow section, one of the end surfaces of which is

  formed and whose upper face facing the adjusting cylinder

  ge 24 has an opening 28 communicating with the axial opening

  25. The closed box-shaped hollow sections of the

  The end 27 is extended by one end extending beyond the adjustment tube 24 towards the brake linings, the end being in the form of an open U-profile, the open face of which is turned towards the brake linings. 12. In the branch 29 of this U-shaped profile is cut a trapezoidal opening 30 in which is fixed a triangular cutting plate 31, whose cutting tip 32 projects outside the U-shaped profile. turning is in rotation, it is this cutting edge that removes the material of the brake lining 12. The open side of the profile in

  U of the suction connection 27 constitutes at the same time an opening of

  Piration 33 in which the dust and chips that result from the shoot are sucked. Considering the faces of the rotation of the turning apparatus, it is noted that this suction port 33 is oriented in the direction in which the Dustière and the chips fly. The cantilevered end of the suction connection 27 is also open, in order to also capture the dust and

chips by this way.

  It can be seen that during the turning of the brake linings, the dust and the grains are sucked up through the orifice 33 inside the coupling 27, and then pass through the axial opening 25 and the radial opening 23 of the adjusting cylinder for win, by tube 21 and

249770 '

  the connecting pipe 20, the di, ti of a -:]: ó? ',. 17 - i: o-nt e! Ir'in. by means of the .ir as-, r- "ar -, c: errati - f,.

  One test shows naked what, ncee ra- 'c.rd -as-

  piratlion 27 it is not titled; aslurrent in is.n ,, - ie -, - it has urofil U in the vicinity of trarnc -rt 2 of ap'-cutter 31, r. But no, in bearu, - :: of a, there is a prodil in L, that is to say, that is -ran''e, ee'ti 4 branthe 29 It was to be suiprioated at the beginning of the year. '; Aspirate 33. Me.me with a connection 'asr, iretrin ayar.t -a- such structure, pofussi re. and] the cores which are: - = t; o n l turning are catr) ts by the edifice of, -, irtioa 3, gagrent, p, r

  the route described above, the 3 rd of aspirate-i9.

  In addition, the open front surface of the door should be closed, as indicated by dashes on the front.

  4. In this case, the suction port 33 e-st drilled all around.

  The coupling 27 can be produced, for example by a fr-iting operation in a para1léla ep1-qe block, as the indiqiua in Figure 5. In this paral paralegégo-, eo ' mills a channel whose conto.ir coliespond to that of the interior of hollow profiié and whose bottom corresponds to the connection of asairation. In the frontal front surface, the channel f-jnd is eliminated by a fillet, thus forming the orifice where it is drawn.

  this milled part, litrs u u., ontani zation i3 region is nowadays

  24 in FIG. 5, the countersunk portion 27 has been shown in FIG.

Claims (9)

  1, Device for rotating parts, in particular brake linings, comprising a tool mounted in a tool holder and having a cutting edge, and a device for drawing dust and chips which are produced during the turning, characterized in the tool (1) or the tool holder (18) has a built-in suction port (5; 33) adjacent to the cutting edge (2; 32) of the tool in close proximity thereto; who communicates   with a suction channel (6; 20) leading to the device piration (19).   2. Disoositif according to claim 1, characterized in that the suction port (5; 33) is oriented in the direction   in which the dust and film chips 4 fly.   3, device for rotating parts, in particular brake linings, comprising a bar-shaped tool holder at the front end of which is fixed a cutting tool and a   device for sucking dust and chips that are   during the turning, characterized in that the tool holder (18) is in the form of a closed hollow profile (27) which, in the region of the cutting tool (31), is extended by an open profile, in that the cutting tool is attached to one of the branches (29) of the open profile, in that the open side of the open profile constitutes a suction opening (33) while the inside of the hollow profile   closed (27) acts as an integrated suction duct   communicates with the suction device (19).   4. Device according to claim 3, characterized in that the open profile of the tool holder (27) has an outline L or U.   5. Device according to one of claims 3 or 4, characterized   in that the front surface of the profile forming the holder   tool (27) is open in the vicinity of the tool (21).   6. Device according to claim 3 or 4, characterized in that the front surface of the profile forming the tool norte   (27) is closed in the vicinity of the tool (21).   7. Device according to any one of the claims   3 to 6, characterized in that the hollow profile forming the tool holder (27) has a rectangular section and is fixed, by its upper face opposite the cutting edge of the tool, to the underside of a tube (24) extending perpendicularly to the tool holder, and in that the inner space of the profile and the opening (25) of the   tube (24) communicate and form part of the suction duct in-   porates. 8. Device according to claim 7, characterized in that the region of the hollow profile constituting the tool holder (27) extends beyond the diameter of the tube (24) in the region holding the tool (31),   9, Device according to one of the claims 7 or 8, carac-   characterized in that the opening (25) of the tube (24) supporting the holder   tool (27) is connected by a channel (21, 20) with the device suction (19).   Device according to claim 9, characterized in that the tube (24) supporting the tool holder (27) is connected to a tube (21) perpendicular to the latter, which communicates with the opening (25) of the supporting tube. the tool holder, and in that at this tube is   connected to a connection duct (20) leading to the suction device ration (19).