CH266135A - Machine for checking the dimensions of mass-produced parts. - Google Patents

Description

Machirr for the control of dimensions of parts manufactured in series. The subject of the present invention is a machine for checking the dimensions of parts manufactured in series; said jaw is characterized in that it comprises a frame which supports a feed device comprising a mobile support intended to receive the part to be calibrated and capable of being brought at will from a loading position and from - Loaded up to Jans a calibration position, the first frame also supporting a feeler device comprising several comparators intended for the simultaneous control of different dimensions of the workpiece and. each having a feeler which determines the position of a mobile lever on which the extremity travels a path limited by two contacts forming part, with said lever, of an electric indicator device comprising for each eomparatetu- a main tinted lamp connected in Series with an impedance between] the Terminals of an electrical supply network and two secondary control strips which are respectively connected in parallel with said main strip, depending on whether the movable lever of the corresponding comparator cooperates with one or the other of the contacts limiting its trajectory, the respective impedanes of the elements of the indicator device being such that said parallel connection of one of said secondary indicator lamps causes, on the one hand, the last line illumination and, on the other hand, a chininution of current Jans ha principal lamp such that the laminosite of last Bette becomes practically nil, the whole being arranged in such a way that the indicator device indicates if each of the controlled dimensions of the part presented under the feeler device is caught within the limits of a determined tolerance, is smaller than the lower limit of the said tolerance and is greater than the limit. Bette last upper limit.

The drawing represents, ä. By way of example, a form of execution of the jaw according to the invention.

The fij. 1 is a faee view, certain parts of the niaehine not being represented. fig. `? is a side view, partially in section.

fig. 3 is a seheina of the Metric eireuits of the machine.

The jaw represented comprises a frame mainly constituted by a horizontal bar 1 and by a vertical Bonsole 2. For the vertical faee 3 (fi(y. 2) of the Bonsole 2 to remain perfectly perpendicular to the horizontal faee . 1, RTI ID="0001.0268" WI="9" HE="3" LX="1476" LY="1905"> said bracket 2 is provided with reinforcing ribs 5 and rests on the first horizontal beam by 1' intermediate of a generously dimensioned support face, the pillar G, fixed to the horizontal bench 1, supports a supply device comprising a mobile part support (see fig. 2).

Panel 7 fixed to console 2 presents a series of lamps 8, 9 and 10, each consisting of three designated pilot lamps.

embarrassed by signs; < plus , minus and 0. K. . The image of the pike whose dimensions are to be counterbalanced is shown on table 7 as indicated at 11. indicate that the indications given by the said lamps relate to the said dimension. The same is true for the series of lamps 9 and 10, connected respectively by lines 13 and 14 at other sides indicating other dimensions of the pike. 0n will facilitate understanding of the operation of the machine by briefly describing the function of the indicator panel 7: K. of the skies of lamps 8, 9 and 10 light up if the checked dimensions indicated by lines 12, 1.3 and 15 are all taken within the limits of the tolerances allowed for each of the dimensions, the other lamps remaining 6 shades. On the other hand, if one of the dimensions checked is outside the limits of the accepted tolerance, one or the other of the more or less corresponding lamps lights up depending on whether the said dimension is too large or too small. , while the corresponding 0. K. Lamp remains off. The pilot lamps are of prUerenee colors, the lamps 0. K.:.> being, for example, wertes and the lanipes more:> and less kaut respectively pinkish and yellow.

The niaeline sensing device represented comprises three comparators each intended to control one of the dimensions indicated in Table 7. Two of said comparators (16 and 17) are arranged vertically and the third (18) is arranged horizontally.

Each of said comparators comprises a housing which contains two opposed fixed electrical contacts 1'-in to 1'aut.re which limit 1a. the bearing of a swaying lever whose position is determined by a feeler. The comparators of the machine represented are indicated schematically at 16, 17, 18 to fig. 3. Lever

oscillating eliaque eoniparateur has two arms: a short arm 85 and a Jong arm 84, whose 1'extreniit6 moves between] eontacts 21, 22 mentioned above (see eomparateur 17 in fig. 3). Said extremity carries a contact capable of cooperating with one or the other of the contacts depending on the position of the feeler. to close the electrical circuits of the comparator which will be specified later and to indicate whether the controlled dimension is greater than the upper limit or smaller than the lower limit of a tolerance, or even included in the latter. The position of the fixed controls can be adjusted using adjustment knobs '?1' and 22' (fig. 1 and 2).

The support devices of the comparators 16 and 17 are identical, and the same ref6renee numerals are eniploz@s to designate the corresponding organs of said comparators. Said comparators are mounted on a slider 23 (Fig. 2) which cooperates with a slider 24. 0n can adjust 1a. Position of the eoidisseau 23 with respect to the eoulisse 21 mo7en dun adjustment button 25. A i-e glage more gr OSSIER of the Position of the eompa rat.eur can be realized ä. 1'aide eou smooth 24.1, 26, ee d6plaeement can be ordered to me in a button of inanoeii vre 27 secured to a screw of eom.mande 28. The member 26 is ä. its turn fM to a bucket eoulisse 29 which cooperates with a eoulisse 31 by the intermediary of a V of tuidage 30. The smooth neck 31 rests on the vertical faee 3 of the console 2 and an adjustment button 31_1 (fig. 1) allows adjustment of the a. Slider position 29 Jans slider 31.

A main tightening button 32 is provided to block the shim 24.1 in its i-6adjusting position. which has an opening 34 to allow movement of the inanehon 33_1 and of the bolt 32.1. sann que ee last ein-

Adjust the relative position of these elements. The outer end of the bolt 32 has a reduced diameter part 35 which is screwed into the adjustment knob 32. ier 37 which, when the knob 32 is loosened, carries in turn, through the intermediary of a spring 38, on the crank pin <B>33.1.</B> The nut 36 is left behind on the shoulder dii bolt 32t and serves as a stop for collar 37. As a result of the presence of spring 38, the serraae pressure exerted by the device cannot fall below a certain limit, independently of the degree of tightening of button 32 When the button 32 is fully screwed in, it firmly holds the various smooth or smooth arms by exerting pressure on the handle 33:1 through the intermediary of the clevis 37.

comparator 18 is supported similarly to comparators 16 and 17; its Position, however, can only be adjusted in the horizontal direction, the vertical adjustment being instantaneous. The comparator 18 is. fixed on a slider 40 which is linked to a main bucket eoulis 41 (fig. 2) cooperating with a horizontal mulisse 42 fixed on the verti calc faee 3 of the console 2 by means of a tightening button 43. A button of adjustment 44 eoope rant with a screw 45 makes it possible to adjust the relative position of the elements 41. and 42. The button 43 works in the same way as the two buttons 32.

Comparators 16 and 1.7 read feelers 79 and 20. For comparator 18, the arrangement is somewhat different. This eom parator is, in fact, provided with a feeler 46 which cooperates with an independent feeler 47 Carried by a drawer 48 arranged between guides 49 and 50. The latter are Carried by a Plate 51, which is rigidly fixed On the first main beam 41. In this way, the sensor -16 of the comparator 18 does not work directly on the part to be checked, but through the intermediary of the independent sensor 47. Just as the comparators 16 and 17 have spring devices which grow. their respective feelers downwards, i.e. a

Under pressure, the dial gauge 18 is also provided with a spring device which urges the feeler 46 to the right (fig. 1) under sufficient pressure to proceed with the calibration of the part.

The fourth sensing element is constituted by a reference stop 52 which is rigidly fixed to a slider 53 mounted in an adjustable manner on a main slider supported by the console 2, in the same way as the main slider 41. Only the first edge 54 of this main slider is visible at end 1.

The slides 24.1 of each of the comparators 1.6 and 17 carry electromagnetically controlled retainers 55 and 56, the slider 41 of the comparator 18 being fitted with a similar device 57. These retainers 55, 56 and 57 are provided with of control arms 58 59 and 60 (fig. 1 settlement). The arms 58 and 59 cooperate respectively with the feelers 19 and 20 and serve to hold the latter in their raised position, except while the electro-manual control devices are actuated and allow said arms 58 and 59 to lower. The arm 60 cooperates with a stop 61 fixed to the independent feeler 47 and is normally able to maintain said feeler in its extreme position of ---auelie (fig. 1) until the corresponding electro-magnetic control device sofft actuates and allows the arm 60 to move to the right (fig. 1), the first independent feeler 47 then being poiisse in the direction of the fixed feeler 52, under the action of the feeler 46 of the conipai-ator 18.

The piece in the Onti-ole Position is shown at <B>IV</B> in fig. 1 .. The feelers 5: 'and 19 cooperate to calibrate 1'u extremities of said pieee,] are feelers 20 and 47 coopei-ant to ealibrer 1'autre end of Bette last and the length between the two shoulders of the pike being. calibrated between the first feeler 47 and 1a. reference stop 52. To adjust the machine so that it can operate on pikes such as pike IV, it is preferred to start by bringing the referenced stop 52 into the desired position, in which it is blocked. The coinparator 18 is then brought approximately into the desired position, then its position is determined with precision using the adjustment knob 44, before being locked in place. The comparator 18 is then adjusted so that the distance between the reference stop 52 and the independent feeler 47 is equal to the exact nominal distance that the piece Pinie must present between its two shoulders, while the independent feeler 47 pushes back the first feeler 46 of the comparator. 0n then proceeds to the adjustment of the comparator 18 by means of the adjustment button 25 of the latter, by slightly displacing the first body of the comparator with respect to the feeler 46, until in ttne Position for which the first longer arm of the elbow lever which is located at the interior of the comparator, as described previously, does not cooperate with any of the electrical contacts 21 or 22. We then proceed to adjust the position of the electrical contacts, so that the elbow lever cooperates with one of the latter. when the distance between the feeler 47 and the stop 52 exceeds the upper limit of the tolerance allowed for the controlled distance, and cooperates with the other contact when this distance is smaller than the lower limit of said tolerance. The position of the comparators 16 and 17 is also adjusted by means of their respective support devices, so that the elbow levers of said comparators do not cooperate with any of the contacts 21 or 22 when the distances between the combined feelers 47 , 20 and 52, 19 are nominally exact.

As indicated previously, the machine comprises a feed device comprising a mobile pike support capable of being brought at will from a loading and unloading position to a calibration position in which a pike to be checked is arranged on said Support is subjected to the action of the feeler device. This support is mainly constituted by a drawer 64 disposed between two guide elements 62 and 63 having longitudinal V-shaped grooves. The drawer 64 is also provided with <B>V</B> grooves and rollers 65, dopt the axes are inclined, are arranged dass said grooves which face each other. (A 1a. fig. 1, the first drawer 64 is seen end.) The drawer 64 is provided with a rod 66 to which is fixed an operating handle 67; it has an opening 68 which allows the passage of an arm 69 secured to a crank fixed to the rod 66. and the spring 71 is disposed between the sleeve of the arm 69 and the pond of the opening 68 of the drawer. The drawer is provided with a member 72 at its end adjacent to the feelers. This member preseilts at its end 73 with a shape adapted to the reception of the pike to be checked, im Grip member or finger 74 cooperating with said Support and holding the piece On the latter. Finger 74 is fixed at one. Tray 75 which is Supported by elastic blades 76 and 77, fixed at its ends, from drawer 64. The underside of Tray 75 has a column 78 which straddles rod 66 and On this last one. Near handle 67, drawer 64 is provided with an arm 79 which carries an adjustable stop screw 80 which cooperates with a fixed part of Support pillar 6 when the first drawer is moved. the end of Bauche (fig. 2) of its course. The right-hand outer limit (fig. 2) of the eourse of the drawer 64 is determined by a stop 81_1 integral with said drawer which abuts against the first pillar 6 (position represented in 1a. fig. '?). The arm 69 is intended to cooperate with an electric switch constituted by three blades 81, 82 and 83 carrying contacts. The arm 69 is capable of first closing the contacts provided between the blades 83 and 82, then of closing by 1a. Suite 1e eontaet planned between arms 82 and. 81. The function of this switch will be explained in detail during the description of the diagram of FIG. 3.

In fig. 2, the Pike Holder is shown in its outward position, in which the stopper 81A abuts the post 6. The continued outward movement of the control handle 67 (towards the

right in fig. '') causes Ja meets the arm 69 and the column 78 and the latter drives the 1st Plate 75 carrying the 1st finger 74. The Plate 75 moves against the action of the elastic blades 76 and 77 which support it and separates the 1st finger 74 of the extremity 73 of the e16inent 72 which supports the part to be checked. When the finger 74 is sufficiently withdrawn to no longer cooperate with the extremity 13 of the coin support, an operator can: introduce a coin into the latter; Subsequently, when the operator releases the handle 67 or pushes it towards the Bauhehe, the finger 74 is applied to the part and keeps it elastically in place in the part holder 72. If the handle then pushes the handle 67 towards the Bauhehe, the spring 71 is comprinie 16g #: renient and forces the drawer 64 to move evenly towards the Bauche until the clue the screw of base 80 meets the first pillar 6. The whole is carried out as soon as when the first drawer reaches 1'eltreinit6 of its race towards the gauclie, the cotitröler part is between the jaws of the feelers 19, 20, 47 and the reference stop 52.

Between the presentation of the pieces, when the 1st Piece Support is in the Load Position (as shown in ng. 2), the feelers 19 and. 20 are inaintenus dann tine Raised position and the first feeler 47 is inain held karte of the. retracted butk 52. The feelers are held in these positions by electromagnetically controlled retainers 55, 56, and 57, and the feelers remain in the withdrawn positions until a pick is released. in Calibration Position, that is to say until the first drawer 64 is brought into the Calibration Position, until 1 < t stop screw 80 prevents the continuation towards the left of the movement of said drawer and until continues to move towards Bauche 1a. handle 67, so that arm 69 presses spring 71 and engages contact blade 83. 6 electromagnetic 55, 56 and 57 are aetionn6 to d6,.-a.-er their respective feelers and allow them to come

in Calibration position sttr the part to be moved. Continuing the 1st movement, 1a. poi <I>4</I> <B>(#- 1</B> 6th 67 pushes the wool of contaet 82 On the wool of eontaet 81, which kablit the cooked eir of command of comparators 16, 17 and 18 , from plane to, indicate on the luminous board the result of the control.

fig. 3 is im seh 6ma of the inaehine represented atLt fig. 1 and 2, in which the comparators 16, 17 and 18 are represented individually. The longest arm of the bent lever of the coinparator 17 is shown at. 84, the first longer arm at 85. A dashed line connects the shorter arm 85 to the feeler of said comparator which is represented at 20. Contacts '_'1 and 22 cooperating with the first arm 84 of said comparator are also represented. The comparators 16 and 18 are also represented with their feelers 19 and 47. The comparators are ruled from teile inaniere qtt'au rest the first arm 84 of the comparator 17, for example, coopei-e with the first contact 22; if the first sensor 20 is dann tute Calibration position teile that the distance between said sensor and. The cooperating arm 47 is included in the limits of tolerance, the arm 84 is. by the feeler 20 in a position where it does not rest on any of the contacts 21 or 22. 84 reaches the Position in which it cooperates with the arm 21, and if the feeler does not lower far enough because the tension being controlled is greater than the upper limit of the tolerance, the arm 84 continues to operate with the eontaet 22 as before the piece is placed Jans 1st device. The positive gleetroinagn@tic resonating device 56 corresponding to the comparator 17 is represented seh6matiqueinent at 1a. fig. 3. The electro-magnetic retainers 55 and 57 of the other comparators are of identical construction. Device 56 comprises an noy at 86 on which is. articu16 tin lever 87 corresponding to the arm 59 represented in FIG. 1. The spindle is provided with a coil 88 and a movable armature 89 is attached to the lever 87. of springs planned Jans 1st comparator. When the coil 88 is traversed by -an exeitation current, the first lever 87 tilts around its pivot and releases the first feeler `_'0 which can descend to perform the first calibration.

Contact blades 81, 82 and 83 are shown in FIG. 3; the blade 82 is connected to one of the Terminals of ane Input socket 91 connected to, freezing the machine to, a network and the blade 83 is connected by a concluctor 92 to one of the Terminals of each of the reels. inents 88 of devices 56, 55 and 57. A conductor 93 connects the other terminal of each winding 88 to the other terminal of the input socket 91. When the wool 83 is pushed against the blade 82, the first circuit 0 the excitation of each of the windings 88 of the three devices 55, 56 and 57 is closed and each of the said electronic devices thereby releases the feeler of the corresponding comparator.

The series of indicator lamps 8 shown in FIG. 1 is made up of three lamps 94, 95 and 96 which are identified by plus, minus and O.K. signs. Lamp 95 is connected to one of the Terminals of Input Socket 91 through resistors 97 and 98. These resistors may be replaced by equivalent impedances when AC power is used. of the machine. The other Terminal of the Lamp 95 is connected by a conductor 99 to all the various elbow levers of the comparators 16, 17 and 18. The conductor 99 is also connected to a conductor 100 connected to, in turn to the contact blade 81 As a result, when the contact blade 82 is applied to the blade 81, a circuit comprising the lamp 95 is established and said lamp lights up if the arm 84 of the comparator 17 does not cooperate with any of the contacts. 21 and 22. On the other hand, if the arm 84 cooperates with the contact 21, because of the position taken by the probe 20, then the time of the terminals of the lamp 96 is connected. by a conductor 101 to the conductor 99 connected to the conductor wool 81 and, since the other Terminal of the said Lamp 96 is connected directly to the resistor 98 by a conductor 102, the said Lamp is also energized, in parallel with Lamp 95, and lights up.

The circuit of the lamp 95 always tests closed, whatever the position of the arm 84, but the circuit comprises in series, in addition to the combined resistor 98, the additional resistor 97. Under these conditions, if the lamps 95 and 96 present the same resistance. Once finished, the voltage across Lamp 95 will drop enough that it will no longer light when the parallel circuit of Lamp 96 is established. Also, if arm 84 is brought into a position such that it. In conjunction with contact 22, a conductor 103 connected to a Terminal of Lamp 94 also establishes a circuit parallel to that of Lamp 95 which is extinguished when Lamp 94 is turned on. The lamps 104, 105 and 106 correspond to the comparator 18 correspond to. lamp series 9 of Table 7. The ciruits of said lamps are similar to those described with reference to lamps 94, 95 and 96. Lamps 107, 108 and 109 correspond to series 10 of lamp lamps. of Table 7, they are controlled by comparator 16 in the same way.

When a part as represented at 11' is placed in the parts trolley and is moved between the previously adjusted feelers, the comparators thus establish circuits for the pilot lamps which indicate on the board whether it is one of the three dimensions controlled is included in the toldrance, smaller than the inferior limit or greater than the upper limit of the last rette. Once the maehine is set, the operator can quickly pick up mass-produced parts and parts. can easily classify the last ones according to whether they are good, too small or too brandy, classifying them, moreover, into categories according to the dimension which is not exact. The machine can be operated by an inexperienced operator due to the fact that once adjusted for a given shape of picken to be checked, it does not require any manual operation requiring a great deal of skill.

The machine can easily be used to check parts of different shapes, it suffices to make the necessary adjustments of the comparators. The number of comparators is not limited to <B>14</B> three; additional comparators can be mounted on the machine shown, if the stone to be checked includes more than three dimensions to be checked.

Claims (10)

RR VDNDICATION Machine for the control of the dimensions of piken manufactured in series, characterized in that it comprises a frame which Supports a feeding device comprising a mobile Support intended to receive the pike ä. capable of being brought at will into a Loading and Unloading Position up to a Calibration Position, the frame also supporting a sensor device comprising several comparators intended for the simultaneous control of different dimensions of the part and each having a feeler which determines the position of a movable lever, the extremity of which travels a path limited by two contacts forming part, with said lever, of an electrical indicator device comprising, for each comparator, a lamp main indicator connected in series with an impedance between the terminals of an electrical supply network and two secondary indicator lamps which are respectively connected in parallel with said main lamp, depending on whether the mobile lever of the corresponding comparator cooperates with the one or the other of the ontaets liinitiating its trajectory, the respective impedances of the elements of the kant indicator device such that said connection in parallel of one of the said secondary indicator lamps causes, on the one hand, the illumination of the last rette and, on the other hand, on the other hand, a decrease in current in the main lamp such that the luminosity of the last Bette becomes practically zero, the whole being arranged in such a way that the indicator device indicates whether each of the controlled dimensions of the pike presented are the 1st feeler device is within the limits of a given tolerance, is smaller than the lower limit of the said tolerance or is greater than the upper limit of the latter. 1. Machine according to claim, characterized in that the feeler device comprises reference stops arranged opposite the feelers of the comparators and on which the part to be checked rests during its calibration. 2. Machine according to claim and sub-claim 1, characterized in that at least some of said butks are constituted by stationary members dopt the position is stiseeptible to be adjusted. 3. Machine according to rev endieation and sub-claim 1, having a feeler device comprising at least two coiirpara- t.ettrs arranged perpendicularly 1'rts relative to 1'autre, characterized in that the reference butk of at least one comparator is constituted by a member secured to the feeler of the comparator arranged perpendicularly with respect to the first comparator. q. Machine according to claim, characterized in that the comparators of the sensing device are mounted on the frame of the machine by means of supports arranged in such a way as to allow individual adjustment of the position of each comparator. 5. Machine according to claim, earac- thisee in that the feelers of the comparators are subjected to ä. the action of elastic means which tend to bring them into their respective calibration positions, and in that 1a. machine comprises retaining devices which prevent said feelers from reaching said calibration position as long as said mobile support does not bring Jans to its calibration position. 6. Machine according to claim and sub-claim 5, characterized in that the retainers of the probes comprise electrical control devices, the excitation circuits of which are controlled by a switch arranged so as to Wetre Closes only when said Mobile Support is in the calibration position. 7. Machine according to claim, characterized in that it comprises a general switch branch in the circuits of the indicator device, and in that said West switch Closes only when said mobile Support is brought into its calibration position. B. Machine according to claim and claims 5 to 7, characterized in that the feed device comprises a control member received elastically from the movable support, said device being arranged in such a way that the initial displacement means said control member of control, during the advancement of said Support, causes the displacement of said Mobile Support to bring the latter into the calibration position, and that the subsequent movement of the control member authorized by the elastic connection causes first actuation of the control switch for the retaining devices of the feelers, then actuation of the general switch for the circuits of the indicating device. 9. Machine according to claim and 1.5 sub-claims 5 to 8, characterized in that the feed device comprises a gripping member fixed to the mobile support by means of elastic blades and, which contributes to maintaining places the pike to be calibrated on said Mobile Support when the latter is brought into the calibration position, and in that the control member of said Mobile Support is arranged in such a way that the initial displacement of said Control Member, when the withdrawal of the Support. mobile, causes the displacement of said support to bring the latter into the Loading and unloading position and that the subsequent displacement of the control member causes the displacement of the said handle Take-up member to release the pike. 10. Maehine according to. reference, taraeterised in that the control blades of the various comparators of the indicator device are mounted indicating the indicator lamps corresponding to the various controlled dimensions shown in said image.