DD152853A1 - ALTERNATING DEVICE FOR MEASURING APPLICATOR ON TEST POTS - Google Patents

Abstract

The invention relates to a changing device for Meßinsatztraeger at Tastkoepfen for measuring machines with the aim to make the Meßinsatzwechsel an automation zugaenglich and with the task to enable the exact adjustment on the probe and to prevent the action of external forces when changing the measuring insert on the Fuehrungssysteme of the probe. The device comprises a housing with inner cone, in which a provided with a Morse taper Meßinsatztraeger is arranged. In Gehaeuse a by means of a drive and an intermediate gear against the action of springs sliding tie rod is provided on which provided with Innenkegelflaechen, resilient gripper arms are arranged. On the Morse taper of the measuring insert carrier is a partially abgegefraestes Kegelstueck, which formschlüssiges and loesbar with the Innenkegelflaechen the gripper arms is in operative connection.

Description

Title : Weohseleinrichtung for Meßeinsatzträger for probes

Of the invention w ending area;

The invention relates to a changing device for Meßeinsatzträger for probes, preferably for automatically operating measuring machines, wherein in the Meßeinsatzträger one or more measuring inserts are used, with which the test object ate-stet _e

Characteristic of the known technical solutions:

It is generally known from machine tools to provide tools with a conical shaft and to insert this into a receptacle provided with a corresponding cone and possibly to lock it by means of screws or other means.

In measuring machines, z _e B. coordinate, it is "known to screw measuring inserts arranged in Meßpinolen Meßeinsatzträgern or otherwise use (DD-PS 92567) " In such Meßeinsatzträgern are up to five, sometimes differently according to the Meßobjekt'gestaltete Meßeinsätze or Taststifte ,

From the company publication no. 60-801-d "Universal measuring machine UMIvI 500" of Pa. Carl Zeiss, Oberkochen, and from DE-GM 7.231.877 a 3-D probe with a Meßeinsatzträger with receptacles for five measuring inserts is known, the measuring inserts are screwed into the recordings and individually defined by means of a. Coded clamping ring manually clamped , The clamping ring ..... is rotatable about the z-axis and carries code numbers

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  which the recording to be solved can be preselected. When releasing a particular Meßeinsatzes the corresponding code number is brought by means of the clamping ring in a marked position and pressed the clamping ring upwards, connected to a corresponding rotation.

A probe based on the same principle is described in the publication 111.800-086 "Three-coordinate CNC measuring machine 1200x1000x600" of Fa ₀ Ernst Leitz, Wetzlar, 'in which also the measuring inserts are individually manually inserted into Meßeinsatzaufnahmen the load head *

• In the case of extensive measuring tasks, however, it is additionally possible to make several changes of measuring positions to complete measuring of the object to be measured. In fully automatic measuring machines, a. Manual meter change, as in the known measuring machines. An undesired interruption of the automatic measuring sequence means that Femex is always in danger. the damage of the highly sensitive guide system of the probe by externally introduced forces for clamping and releasing the Meßeinsät ze.

Object of the invention :

It is the purpose of the invention to overcome the drawbacks of the prior art and to make the meter replacement process accessible to automation.

Explanation of the essence of the invention :

The invention has for its object to provide a changing device for measuring inserts, the exact -Justierung the Meßeinsatzträgers with the measuring inserts

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According to the invention, this object is achieved in a change direction for Meßeinsatzträger comprising a housing with an inner cone, characterized in that in the Housing a in the axial direction-by means of a drive and an intermediate gear against the action of springs slidable tie rod is provided, on which provided with Innenkegelflachen, resilient gripper arms are arranged, and that on the Morse taper of Meßeinsetz- carrier laterally partially milled off cone piece. is arranged, which positively and releasably with the inner taper surfaces of the gripper arms in operative connection '

r! 5 stands ·. ,

  As an intermediate gear, a Kniehebeigetriebe is provided, which. Is connected via a threaded drive with the drive, such that when clamped Morse taper of the Meßeinsatzträgers the toggle mechanism is in a relaxed position

It is advantageous for the function of the changing device that the gripper arms have a low spring stiffness in the vertical plane to the longitudinal axis of the changing device.

The conical surfaces of the laterally partially milled conical piece facing the Morse taper »When using the invention, the Meßeinsatzwechsel the probe is simplified because, the measuring inserts can be adjusted beforehand. Also, especially in the measurement of complicated DUTs is given the opportunity to automate a Meßeinsatzträgerwechsel "On the other hand, in contrast to the manual change of individual measuring inserts, the danger of damage to the sensitive guidance system of the probe due to external forces is eliminated.

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Aiisführungsbeispiel:

The invention will be explained in more detail below with reference to an exemplary embodiment.

Pig. 1 a changing device with dissolved Meßeinsatzträger and Pig «2 the changing device 'according to Fig» 1 in tensioned

State

 The Vifechseleinrichtung according to the. Figures 1 and 2, which '

ΊΟ on the deflectable part (not shown) of a probe it is arranged comprises a housing 1, whose 'lower part is provided with an inner cone 2. "In this inner cone 2 a fitted with a matching Morse taper 3 Meßeinsatzträger 4 is inserted, which carries 5 identical or differently shaped measuring inserts 6 in one or more receptacles * In the housing 1 in a, axial direction displaceable tie rod 7 is arranged under the Effect of springs 8 which are supported in the housing 1 on a support 7, concentric with the tie rod 7 and secured to this gripper arms 10, which have internal tapered surfaces 11 at their lower end have a low spring stiffness to the longitudinal axis of the changing device.

In the housing 1, an intermediate gear 12 is arranged; which is designed as a toggle mechanism with the elements 13, 14 and 15 and the toggle joint 16 and which via a screw, consisting of threaded spindle · 17 'and nut 18, with a drive 19, e.g. a motor connected. The element 13 is rotatably mounted in the housing 1. The toggle joint 16 is connected to the nut 18 and spindle 18 by the drive 19 via the threaded back and forth movable <> The drive 19 is advantageously arranged on the housing 1.

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At the tie rod 7 an anvil 20 is provided, the force-fitting due to the effect of the springs 8 on the element 15 of the intermediate gear 12 is present at the top of the Morse taper 3 of Meßeinsatzträgers 4 is a laterally partially milled conical piece 21, the conical surfaces 22 Morsekegel third "This conical piece 21 is positively connected and in the tensioned state (FIG. 2) is in operative connection with the inner taper surfaces 11 of the gripper arms 10 of the tie rod 10 7.

The following describes the function of the change device:

To populate the changing device with the Meßeinsatzträger 4 takes; the intermediate gear 12, the position shown in Fig. 1, d, h _{# of} the tie rods. 7 with the.

Gripper arms 10 is against the action of the springs eighth · Moved down. At this position of the tie rod

7 , the Meßeinsatzträger 4 with the two sides. , milled cone piece 21 and the Morse taper 3 in the inner cone 2 and the gripper arms 10 is introduced to the abutment of the cone piece 21 on the anvil 20 of the tie rod 7 by rotation of the Meßeinsatzträgers 4 by 90 ° about the longitudinal axis of the changing device . slipping out of Meßeinsatzträge.rs 4 from the inner cone 2 prevented because the conical surface 22 rests against the inner cone surface 11 of the gripper arms 10. A further widening'der gripper arms 10 in the radial direction is excluded by a ring 23 which is mounted in the housing 1.

By the drive 19, the intermediate gear 12 is brought via the threaded spindle 17 and the nut 18 in the position of FIG. 2, ie tie rods 7 with the anvil 20 and gripper arms 10 "move under the Y / irkung derer springs 8 ' above.

3 ^ 10 and the cone piece. 21, the Meßeinsatzträger 4 "

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with the Morse taper '3 in the inner cone 2 of the housing. 1 sucked and fixed ».

As a result of the self-locking is "at a Meßeinsatzwechsel pushing out the Morse taper 3 from the inner cone 2 necessary." For this purpose, the intermediate gear 12 is brought into the position to Pig 1. The gripper arms 8 solve sioh from Kegelstüok 21, »

The anvil 20 presses the Meßeinsatzträger 4 from the inner cone 2, wherein the Grsifer arms 10 a Heraus-

10- fall of Meßeinsatzträgers 4 prevent «After the Meßeinsatzträger 4 is rotated back by 90 °.,. he can be taken out of the exchange. As additional backup and assistance in inserting and removing the Meßeinsatzträgers 4 a pin 24 is arranged thereon, which rests in an angled recess 25 of the housing 1 at the lower end of the inner cone 2 *

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Claims (1)

223 6 28 Claim of invention : 1 «exchange device for Meßeinsatzträger, which are arranged on the deflectable part of probes, comprising a housing having an inner cone, in which. a measuring insert carrier is provided which is provided with a Morse taper and which carries measuring inserts, characterized in that a tension rod which is displaceable in the axial direction by means of a drive and an intermediate gear against the action of springs is provided in the housing, with an inner cone ™ provided surfaces, resilient gripper arms are arranged, and that on the Morse taper of Meßeinsatzträgers a laterally partially milled cone piece is arranged, which positively and. detachable with the. Indoor 1j? conical surfaces of the gripper arms is in operative connection. 2 * Change device after point. 1, characterized in that a transmission as an intermediate. preferably. Knob mechanism is provided, which is connected via a screw drive with the drive i-st, such that when clamped Morse taper of Meßeinsatzträgers the toggle mechanism is in a relaxed position » 3o Y / echseleinrichtung to point 1 and. 2, characterized in that the gripper arms have a low spring stiffness in the vertical plane to the longitudinal axis of the changing device. 4 «changing device according to item 1 to 3, characterized in that the conical surfaces of the side partially. Often milled conical pieces face the Morse taper. For this, £ page increments 3645