FR2697459A1 - Modular building elements for the production of support structures and maintenance of machined parts. - Google Patents

Abstract

The invention relates to mutually assemblable modular building elements. According to the invention, connecting bars (85, 86), of quadrangular section, which can be secured to each other and to a base plate with modular perforations, comprise smooth through bores (87) of the same diameter and of the same pitch. that the modular perforations provided in the base plate, said bores, which open each time on two opposite side faces and possibly on each end face of a connecting bar 85, 86), receiving connecting sleeves (93) of same diameter comprising at their periphery one or more grooves or grooves (91) serving as a stop for clamping members 89, 90) which are introduced into threaded bores (88) of smaller diameter which are made, with an offset of one half-pitch, orthogonally to the large diameter bores (87) receiving the connecting bushings (93). The elements are intended for the production of support structures and maintenance of machined parts in a position suitable for their control.

Description

The present invention relates to building elements

  modules for the production of support structures and maintenance of machined parts, as well as

  than to their assembly and to their solidarity.

  One of the aims of the invention is to carry out the assembly of these structures on known base plates which comprise a modular network of standardized perforations and are intended to be placed on a receiving plate, said plate being in particular platinum of a machine intended to control, in the three dimensions of the space, the dimensions of one or more machined part (s) supported (s)

  and maintained by the above structure.

  It has already been proposed to assemble perforated bars

  square section and perforated plates

  corresponding, using insertion elements.

  These known elements, however, have the disadvantage

  deny being difficult to dismount individually without

  having to lift or move the entire structure

  it takes a lot of work and takes time.

  The present invention overcomes the drawbacks of known devices and aims at the realization, the assembly

  and the fixation of standardized modular elements which adapt

  perfectly with the frames of the standard plates (standard NF E 62 331) while allowing, with an extreme flexibility, to build an infinity of structures allowing the support, the positioning and the maintenance in position in the space of a

or more machined parts.

  According to an essential characteristic of the invention,

  binder bars, of quadrangular section, which can be secured together and on a

  modular perforation base, include bores

  slopes, of the same diameter and not even

  modular bores provided in the base plate, said bores, which open each time on two opposite side faces and on each end face of a connecting bar, receiving connecting sleeves of the same diameter having at their periphery one or more grooves or grooves serving as an abutment for serraqe organs which are introduced into

  tapped bores of smaller diameter which are practically

  with a half-step shift, orthogonal to the

  large diameter sages receiving the connecting sleeves.

  According to another characteristic of the invention, screws, housed in small diameter threaded bores, come to bear on the bottom of the groove or annular grooves (s) formed in the sleeves inserted in

  smooth bores of larger diameter.

  In a preferred embodiment of the invention,

  the screws bearing in the grooves are screws

  needle whose conical end bears against the

  these grooves made in the form of a V-groove. To further allow a tightening on said screws

  needle and also ensure a tight assembly of two bar-

  The needle screws corresponding to the V-grooves in the bushings have their axes of rotation at a distance slightly greater than the other.

  at the distance separating the bottom of the corresponding V-grooves

of the connecting sleeve.

  Other features and advantages of the invention

  will emerge from the following description with regard to

  appended drawings which represent, schematically and simul-

  for example, various elements

  and fixing three-dimensional structures on plati-

standardized support nes.

  In these drawings: FIG. 1 is a longitudinal plan view, partly in

  cut, a parallelepipedic connecting bar.

  Fig la is an end view, in the direction of arrow B,

of the bar illustrated in Fig 1.

  FIG. 2 is a longitudinal elevational view corresponding to

to that of Figure 1.

  Fig 2a is an end view in the direction of arrow B of

Figure 2.

  Fig 3a is an elevational view, on a larger scale,

  from a socket to a groove and smooth drilling.

  Fig 3b is an elevational view, on a larger scale,

  a socket with two grooves and smooth drilling.

  Fig 3c is an end view, sockets of Figures 3a

and 3 b.

  FIG. 4a is a view of a sleeve presenting the same

  outer thread that the socket of Figure 3 has but

  whose axial bore is tapped.

  Fig 4b is a view of a socket with three grooves, the axial bore is tapped. FIG. 4c is an end view of the sleeves shown in FIGS.

Figures 4a and 4b.

  FIG. 5 is a view of a tapped axial drill sleeve,

  having a single annular circumferential groove

re off center.

  FIG. 6 is a view of a socket without peripheral groove

  than annular and provided with a smooth axial piercing.

  The Fiq 7 is a large-scale cross-sectional view of the

  illustrating the mounting and fixing, in a bar of laison such as that represented in the

  Figure 1, a bushing of the type of Figure 3a.

  Fig 8 is a perspective view, broken away from

  tiel, showing the assembly of Figure 7.

  Fig 9 is a longitudinal sectional view, on a large scale, illustrating the butt jointing of two bars of laison using a socket to

  two grooves of the type illustrated in Figure 3 b.

  Fig 10 is a cross-sectional view, on a large scale,

  the, illustrating the assembly of a connecting bar with a screw passing through a smooth socket of the type of Figure 3a and screwing into a bore

  tapped at the bottom of a countersink in a

  seat or modular plate not shown.

  Fig 11 is a longitudinal sectional view of the assembly of a workpiece support member with a screw whose head is housed in a counterbore of this workpiece support and whose threaded end is screwed into the axial thread of a bush, fixed in the connecting bar by set screws housed in threaded holes which are made in the

  link bar, orthogonal to the longitudinal axis

dinal of it.

  FIG. 12 is a view similar to that of FIG. 11, the head of a fixing screw being pressed onto a connecting sleeve housed in a connecting bar

  and said screw screwing into an end member

  pin-shaped unit whose base is embedded in

  the bore of an upper sleeve forming

  fathom. FIG. 13 is a view, partly in section, of two bars of

  assembled connection to form a square.

  FIG. 14 is a perspective view, partly in section, of the

  articulated mounting of two connecting bars in con-

  tact by one side, using a smooth socket to

  two grooves of the type of Figure 3 b.

  Fig. 15 is a perspective view, broken away

  tiel, illustrating the pivotal mounting of a bar

  placed on a horizontal bar.

  FIG. 16 is a view of a trapezoidal link element

  used to stiffen an assembly of the type of the

13.

  FIG. 17 is a view, partly in section, of the assembly of the

  Figure 13 stiffened with the help of the element of the

gure 16.

  FIG. 18 is a variant of that of FIG.

  trapezoidal stiffening connection

  by its large base to a diagonal bar of link

its fixed end.

  Fig 19 is a top view, partly in section, of a bar

  pivot, whose end part de-

  graduated forms a flange of articulation.

  FIG 20 is an exploded view, partly in section, at 90 of the previous one, showing the assembly of two elements of FIG. 19 with the aid of a smooth bushing of FIG.

  type of Figure 6 and a connecting screw.

  Fig. 21 is a view of the right-angle connection of two

  articulated elements such as those of Figure 19.

  FIG. 22 is an elevational view of a socket allowing

  the articulated connection of a first link bar

  its with a second supporting such a socket

or with a shoulder bar.

  Fig. 22a is a view at 900 of Fig. 22, partly in section.

  FIG. 23 is a view, partly in section, of the articulated connection

  abutment of a shoulder bar with a socket

  inserted at the end of a second bar without shoulder-

  is lying. FIG. 24 is a view of a hollow socket of the type of the

  qure 3a, but lined with magnetic pads.

  FIG. 25 is a view of a connecting element provided with two

magnetic pads.

  FIG. 26 is a sectional view, according to XXVI-XXVI of FIG.

  28, of a plate with small modular perforations

  surrounding a central perforation

  a countersink for the head of a fixing screw.

  FIG. 27 is a plan view from above of the plate

small modular perforations.

  Fig. 28 is a sectional view, on a large scale, illustrating

  the fixing on a plate of a pin ser-

supporting a machined part.

  Fig 29 is a perspective view illustrating the mounting of support pins and wedging of a part

on a modular plate.

  FIG. 30 is an elevational view, partly in section, of an assembly comprising two lateral bars and a

  crossbar supporting two singing

  each bearing a small-sized plate

  modular drillings equipped with pins.

  FIG. 31 is a plan view from above corresponding to that of FIG. 30, the pins visible at

Figure 30 has been removed.

  As can be seen in FIGS. 1 and 1a, 2 and 2a, a link bar, designated as a whole by the

  reference 1, has two pairs of rectangular faces op-

  2, 4 and 3, 5 The faces 3 and 5, as well as 2 and 4, are connected by through bores 6 spaced step

  P and small threaded bores 7, intended to re-

  cevoir screws not shown here and used for holding in position and fixing grooved connection bushes

  unrepresented, which will be discussed later.

  In fact, this link bar 1 also includes

  at each end, a bore of large diameter 8,

  Thogonal with two threaded bores 7 It can be seen that the pitch P

  two large diameter bores, taking into account the

  alternate and staggered presentation of small and large

  ges, equals the distance between the axes of two

tapped neighbors.

  Figures 3a, 3b, 3c, 4a, 4b, 4c, 5 and 6 illus-

  each of them a model of an assembly or center sleeve

  ge intended to be placed in a bore 6 or in two bores 6 contiguous, a single connecting bar or two

binding bars.

  The bushing 9 of FIG. 3a is a socket with a groove 10, said bushing having a smooth axial bore 11, of a length corresponding to the thickness of a bar

link.

  The bushing 12 of FIG. 3b presents axially

  a bore 13 smooth and has, on its periphery, two reas-

ringlets 14 and 15.

  FIG. 3c illustrates the front part of the sleeve

  12 and allows to see the piercing designated by 13.

  The sleeve 16 of FIG. 4a has dimensions

  identical to that of Figure 3a, but it is

axially view of a tapping 17.

  As for the socket 18, of the same dimensions as that

  the figure in Figure 3b, it is, on the other hand, provided with a

19 and three grooves.

  The bushing 20 illustrated in FIG.

  a tapped bore 21 and, on its periphery, a reason

annular pad 22 shifted.

  Figure 6 shows a small socket 23 without

  smooth bore, intended only for an operation

calibration or centering.

  In FIG. 7, a small bushing 25 with a bore

  axial axis 26, is inserted in a bore of large diameter.

  be 27 practiced in a bar 28 and fixed by two screws

opposite 29 and 30.

  Figure 8 better reflects the setup of the

  7, the screws 29 and 30 penetrating into the wedge-shaped groove

31 of the socket 32.

  In this figure, we can see the other threaded holes 33 each orthogonally located between two

bores 34.

  The end-to-end connection (see Fig. 9), of two bars

  link ends 35 and 36 provided with through-holes 37 and

  38, respectively, is made with a connecting sleeve 39

  its which is provided with two grooves 40 and 41 and is inserted into each of the large bores 42 and 43 provided end

of each bar 35 and 36.

  As can be seen in this figure 9, the axes

  screws 44 and 45 inserted into the internal threads

  responders are each shifted towards the corresponding end.

  of the bushing, so as to ensure a narrow veneer bars, said screws each taking support on the flanks

  extreme inclination of the "V" groove.

  For example, to secure a bar on a

  In this arrangement, a sleeve 46 with a smooth bore penetrates the bar 47 and is applied against the other bushing 48 which serves as a guide. A screw 49, whose head 50 is housed in the bore 51, against the sleeve 46 held by the needle screws 52 and 53, secured together by screwing into a threaded hole provided at the bottom of a counterbore receiving the bushing.

centering 48.

  To attach an element to the end of a bar

  connection, for example the assembly of FIG.

  In this figure, a bar 54 comprises at its

  a large diameter bore 55 into which is inserted

  A bushing 56 of the type of FIG. 4a, whose drilling

  axial 57 has a thread 58 This sleeve has ex-

  afterwards an annular groove into which the

  ends of two needle screws 59 and 60 serving for his hand-

  Tien in the connecting bar 54 A screw 61, whose head enters a counterbore 62 of the element 63 to be fixed, is screwed into the tapping 58 that includes the axial bore 57 of the

socket 56.

  To support machined parts, or to maintain them

  nir, it is known to use supports called pins which must be secured on a seat, for example on a connecting bar Such an assembly is visible in Figure 12 in which a connecting bar 64 serves as support for a pin 65 whose base 66 comprises a tapping 67 For the height adjustment of this pin above the bar 64 connecting shims are used such as 68 and 69 which are stackable with self-center and have a bore axial axis in which can penetrate a screw 70 screwing into the tapping 67 of the pin This screw 70 is supported by its head 71 on the front portion of a locking sleeve 72 provided with a smooth bore and secured in a bore

  large diameter 73 of the bar 64 by means of two countersunk screws

water 74 and 75.

  Figure 13 shows the angled connection

  of a bar 76 with a bar 77 Bores 78 al-

  with tapped holes 79, a connecting sleeve 80 to

  two grooves 81 and 82 inserted both in the two bars

  res 76 and 77, and maintained in these by screws 83

and 84.

  The face-facing joint of two connecting bars can be ensured by the assembly of FIG. 14, in which two bars 85 and 86 can be seen in perspective.

  87 large diameter bores alternating from one side to the other

  be with 88 smaller diameter threads in the-

  which are inserted screws such as 89 and 90 whose ex-

  tremities abut in grooves 91 and 92 respectively,

  a connection and articulation socket 93.

  An edge mounting of a bar 94 on a second bar 95 is illustrated in perspective in FIG. 15, where a hinge bushing with two grooves (not visible on the

  drawing) is held by screws such as 96 in the

  sages 97 corresponding large diameter of the two bars, practiced one perpendicular to the face of the bar 95 and the other perpendicular to the end face of the bar 94. In order to stiffen the orthogonal assembly of the two bars, it is provided a trapezoidal gusset assembly and

  fastener which is referred to as a whole by reference

98 in Figure 16.

  This trapezoidal element comprises three large-diameter holes 99, 100 and 101, each of which can receive a grooved bush capable of cooperating with the maintenance of a groove.

link bar.

  According to one characteristic of the invention, the axes

  bores of this trapezoidal element are concurrent.

  The use of this trapezoidal connecting element 98 is illustrated in FIG. 17, where a horizontal connecting bar 102 can be seen which supports, by a socket

  assembly 103, a vertical bar 104.

  To stiffen the orthogonal connection of the bars

  102 and 104, connection sockets 105 and 106 are inserted.

  in the trapezoidal element 98, as well as in a bore

  107 corresponding to each of the bars 102 and 104.

  As can be seen the trapezoidal element 98

  bore a bore 108 connecting its two bases and intended to re-

  as shown in Figure 18, another bushing

  semblage 109 being fixed in the front bore of a

slash 110.

  To ensure a joint of two connecting bars at the same level, there are provided elements cut in half at their end, as shown in FIGS.

  One end has a smooth perforation 111 leading to

  singing in a coinage 112 o is placed, as one can

  see Figure 20, a smooth link sleeve 113 defines

  The rod 116, which opens into its counterbore 117, has a tapping 118 for receiving the assembly screw 119. The end-to-end connection of the bars 114 and 115 115 is illustrated in FIG. 20 whereas FIG. 21 illustrates the orthogonal assembly of these two bars 114 and

*, moreover likely to take any position

  relative to each other by pivoting around the

  double arrow F When you do not want to use bar-

  linkages comprising a median flat surface 120 of articula-

  In this connection, special elements such as those shown in FIGS. 22 and 22a can be used, which themselves comprise a hinge pin 121 intended to be placed in a bore of large diameter provided in a bar at the desired location. elements designated respectively by reference

  122 in Figures 22 and 22a each comprise a portion of

  appearance 123 provided with a countersink 124 of large diameter in

  which is placed one of the halves of an arm bush

  These elements have the advantage of power, as shown in FIG.

  the articulation of two connecting bars forming an angle

  terminated between them, but also with respect to their pivot axis. Such an embodiment provides a possibility of

  reciprocal pivoting of elements in two orthogonal planes

  as shown by the double arrows F 3 and F 4.

  The modular assembly system complies with the

  vention also provides for the use of complementary

  magnetic fasteners, as shown in the figures

  24 and 25 It can be seen in these figures that

  The ribbed or externally embossed ribbons 125 may be fixed in sockets such as those illustrated in FIG. 24, by screwing, gluing or press fitting, the periphery of the magnetic elements penetrating easily.

  in large diameter bores where socket 126 is

  sere and is fixed by screws not represented penetrating

  in the annular central groove 127 FIG.

  an element reduced to three perforations of large diameter

  two of which are parallel, said element being

  fixed by a screw 128 penetrating into the annular groove

  corresponding diane of a bushing inserted into the bore of large diameter orthogonal to the other two bores receiving

the magnetized organs.

  Finally, for assembling small parts in assemblies, it is provided, as shown in FIGS. 26 to 31, small modular base plates.

  129 whose frame is tighter than that of the elements

  previously shown, said plates comprising a piercing

  central unit allowing their attachment to an appropriate support

  in Figure 26, which is a sectional view

  XXVI-XXVI of Figure 27, we can see that the small

  131 allow the fastening by screwing elements denominated

  2. The pins 132 fixed in the plate 129 by screws 133 are used to support in particular the isostatic support of small parts to be measured. FIG.

  29 illustrates such support where the support pins are

  are mined by white sections while the locking pins end in black circles. The aforementioned wafers 129 can of course cooperate with the standardized elements previously described and FIGS. 30 and 31 illustrate such a cooperation in which a horizontal connecting bar 134 connected to two perpendicular lateral bars 135 and 136 serves to support two small support elements 137. and 138 to three large diameter bores, which are mounted singing and support

  each by means of a socket and a screw

  look like a small wafer such as 129 supporting

  to it support pins 132 and stop pins.

  It goes without saying that the invention has been described and

  purely explanatory, by no means

  tif, and that various modifications of details could be made to the indicated embodiments without

  so far from the field of the invention.

  So that according to the topometric problems

  laid down, the person skilled in the art will have every opportunity to combine the

  to elements of the invention to obtain the most suitable structure for maintaining a part whose ratings

must be measured.

RE V E N D I C AT IO N S

  Modular building elements for producing support structures and for holding workpieces, characterized in that connecting bars (1, 35,

  36, 47, 54, 64, 76, 77, 85, 86, 94, 95, 102, 104, 114, 115,

  134, 135, 136), of quadrangular section, which can be

  fastened together and on a perforated base plate

  modular designs, include smooth through bores

  (6, 8, 27, 34, 37, 38, 42, 43, 51, 55, 73, 78, 87, 97, 99,

  , 101, 107) of the same diameter and not even that the perforations

  modular rations provided in the base plate, said bores, which open each time on two opposite side faces and on each end face of a connecting bar, receiving connecting sleeves (9, 12, 16, 18, 25, 32, 39,

  46, 56, 72, 80, 93, 103, 105, 106, 109) of the same diameter

  carrying at their periphery one or more grooves or grooves (10, 14, 15, 31, 41, 81, 82, 91, 127) serving as a stop for

  clamping members which are introduced into tapped bores.

  smaller diameter rakes (7, 33, 79, 88) which are practically

  offset by half a step, orthogonally to the

  Large diameter gears receiving the connecting bushings.

  2 Modular building elements according to the re-

  1, characterized in that screws (29, 30, 44, 45, 52, 53, 59, 60, 74, 75, 83, 84, 89, 90, 96, 128) housed in the threaded bores of small diameter, come to support

  on the bottom of the groove or annular grooves (s) practiced

  in the sockets inserted into the plain bores of

larger diameter.

  3 Modular building elements according to

claims 1 and 2,

  characterized in that the screws bearing in the grooves are needle screws whose conical end bears against the faces of the groove in the form of a V-shaped groove. 4 Modular construction elements according to the

claims 1 to 3,

  characterized by the fact that the needle screws corresponding to the V-grooves in the bushes have their axes of rotation distant from each other by a distance slightly greater than the distance separating the bottom from the grooves

  in V corresponding to the connecting sleeve.

  Modular building elements according to one

Claims 1 to 4,

  characterized by the fact that when a bored bushing does not

  it does not need fixing, it does not have any peripheral grooves

ring-shaped

  6 Modular building elements according to one

Claims 1 to 5,

  characterized by the fact that a bored bushing of

  connection is slightly shorter than the

  thickness of a connecting bar in the large diameter bore

meter from which it is inserted.

  7 Modular building elements according to one

Claims 1 to 6,

  characterized in that a trapezoidal orqane is provided

  dal (98) reinforcing and stiffening insertable between two

  perpendicular connecting bars (102, 104) one to the other

  said element having three smooth cylindrical bores (99, 100, 101) which have their intersecting axes, two of them being each perpendicular to the side applied to a connecting bar (102, 104) and the third serving to accommodate a two-groove connecting sleeve (109) which secures said trapezoidal element (98) with a third connecting bar (110) supporting another element or serving

  diagonal stiffening of the whole.

  8 Modular building elements according to one

Claims 1 to 7,

  characterized by the fact that magnetic elements

  (125) are inserted into the bore of a bushing of

link (126).

  9 Modular building elements according to one

Claims 1 to 7, characterized in that modular inserts (129) provided with

  a plurality of small bores and a central fixing bore (130) can be mounted on mounting brackets to receive pins (132) for support

  and chocking of machined parts of small size.

  Modular building elements according to one

Claims 1 to 8,

  characterized in that the modular inserts (129) are provided with small diameter perforations (131) which have a narrower ween than the normalized trapezoidal bars or members supporting them and

  in which screws (133) for holding the pins

  (132) for supporting and setting small workpieces

your dimensions.