DE10112977C1 - Height measurement and tracking device for 3-dimensional measurement of workpiece has hydraulically or pneumatically operated brake piston for fixing position of each rotary linkage - Google Patents
Height measurement and tracking device for 3-dimensional measurement of workpiece has hydraulically or pneumatically operated brake piston for fixing position of each rotary linkageInfo
- Publication number
- DE10112977C1 DE10112977C1 DE2001112977 DE10112977A DE10112977C1 DE 10112977 C1 DE10112977 C1 DE 10112977C1 DE 2001112977 DE2001112977 DE 2001112977 DE 10112977 A DE10112977 A DE 10112977A DE 10112977 C1 DE10112977 C1 DE 10112977C1
- Authority
- DE
- Germany
- Prior art keywords
- measuring
- locking device
- brake
- swivel joint
- brake piston
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
- G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
- B25J19/0004—Braking devices
Abstract
Description
Die Erfindung bezieht sich auf ein Höhenmess- und Anreißgerät zum drei dimensionalen Messen und/oder Anreißen von Werkstücken, bestehend aus einem Basisteil, mindestens einem beweglichen, ein Mess- oder Anreißwerk zeug tragenden und mit dem Basisteil direkt oder indirekt verbundenen Arm, wobei jeder Arm mit mindestens einem Drehgelenk versehen ist, dabei wird die Position des Mess- und/oder Anreißwerkzeuges über Messmittel des jeweiligen Drehgelenkes direkt oder indirekt an einem, ein entsprechendes Rechner programm aufweisenden Rechner zur Bestimmung und/oder Erfassung und/oder Speicherung der Messwerte geleitet und wobei mindestens ein Dreh gelenk mit einer Feststellvorrichtung versehen ist, wobei mindestens ein mit einer Feststellvorrichtung versehenes Drehgelenk extern elektrisch, hydrau lisch oder pneumatisch ansteuerbar ist, und die Feststellvorrichtung eine Bremsscheibe oder einen Bremsbacken aufweist, welche von einem Bremskol ben fixierbar sind.The invention relates to a height measuring and marking device for three dimensional measurement and / or marking of workpieces consisting of a base part, at least one movable, a measuring or marking mechanism arm supporting and directly or indirectly connected to the base part, where each arm is provided with at least one swivel, the Position of the measuring and / or marking tool over the measuring device of the respective Swivel joint directly or indirectly on a corresponding computer program-containing computer for determination and / or detection and / or storage of the measured values and wherein at least one rotation joint is provided with a locking device, at least one with a locking device provided swivel joint externally electrical, hydraulic is cally or pneumatically controllable, and the locking device Has brake disc or a brake shoe, which by a brake piston ben are fixable.
Es sind bereits Messvorrichtungen zum Erfassen von dreidimensionalen Ko ordinaten (z. B. DE-GM 94 21 789) bekannt, bei denen die Orientierung eines Objektes im Raum durch die Lage von drei Punkten des Objektes festgelegt werden kann. Ein beweglicher Arm ist mit einem Ende auf einer Grundplatte montiert und trägt an seinem freien Ende eine Sondenspitze. Dieser Arm um fasst vorzugsweise sechs Gelenke, so dass die Sondenspitze innerhalb eines ausgewählten Volumens beweglich ist. Jedem dieser Drehgelenke ist ein Po tentiometer zugeordnet. Die Potentiometer werden über Kabel unmittelbar an den Eingang eines Rechners oder unter Zwischenschaltung eines Messwert umwandlers angeschlossen, die Widerstandswerte in digitale Größen umge wandelt und die Positionskoordinaten der Sondenspitzen errechnet. Darüber hinaus ist jedes dieser Gelenke mit einer Lagerung versehen, die nicht nur die Spielfreiheit des Gelenkes gewährleistet, die des weiteren dem Bediener auch eine leichte Handhabung des Gerätes ermöglichen soll. Nachteilig ist jedoch, dass der Bediener nicht nur ein Teil des Eigengewichtes des Höhenmess- und Anreißgerätes halten muss, sondern dass bei Unterbrechung des Mess- und Anreißvorganges die Sondenspitze am Gerät oder einer sonstigen Vorrichtung abgelegt werden muss.There are already measuring devices for detecting three-dimensional Ko ordinates (e.g. DE-GM 94 21 789) are known, in which the orientation of a Object in space determined by the position of three points of the object can be. One end of a movable arm is on a base plate mounts and carries a probe tip at its free end. That arm around preferably holds six joints so that the probe tip is within one selected volume is movable. Each of these swivel joints is a bum assigned to the tentiometer. The potentiometers are connected directly via cables the receipt of a computer or with the interposition of a measured value converter connected, the resistance values converted into digital quantities converts and calculates the position coordinates of the probe tips. About that In addition, each of these joints is provided with a bearing, which is not only the Backlash of the joint ensures that the operator also should allow easy handling of the device. However, the disadvantage is that the operator not only part of the weight of the height measuring and Scriber must hold, but that when the measurement and Scribing the probe tip on the device or other device must be filed.
Es sind Höhenmess- und Anreißgeräte bekannt (DE 199 03 445 A1), bei denen mindestens eines der Drehgelenke mit einer Arretiervorrichtung versehen ist. Es lässt sich damit das entsprechende Drehgelenk in der momentan einge nommenen Position festsetzen.Height measuring and marking devices are known (DE 199 03 445 A1), in which at least one of the swivel joints is provided with a locking device. It can be used to turn the corresponding hinge on at the moment position.
Weiter sind noch Messeinrichtungen (z. B. DE 198 43 052 A1) bekannt, wobei zum Arretieren der Gelenkarme in einer vorbestimmten Stellung eine pneuma tische Betätigung wirksam wird. Allen bekannten Vorrichtungen fehlt eine si cherheitsrelevante Einrichtung, die bei Druckausfall eine Unfallgefahr verhin dert.Measuring devices (for example DE 198 43 052 A1) are also known, wherein a pneuma for locking the articulated arms in a predetermined position table operation becomes effective. All known devices lack a si Safety-relevant device that prevents accidents in the event of pressure loss changed.
Aufgabe der Erfindung ist es, ein Höhenmess- und Anreißgerät so zu gestalten, dass nicht nur die Bedienung des Mess- und/oder Anreißwerkzeuges sowie die Programmbedienung des Rechners einfach und problemlos erfolgen, sondern dass der Bediener das Gerät in jeder beliebigen Position fixieren kann, damit die Sondenspitze in dieser Position ausharren kann.The object of the invention is to design a height measuring and marking device so that not only the operation of the measuring and / or marking tool as well as the Program operation of the computer can be done simply and easily, but that the operator can fix the device in any position so that the probe tip can endure in this position.
Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, dass die Brems kolben hydraulisch oder pneumatisch beaufschlagt werden und dass zur An steuerung eine Druckleitung vorgesehen ist, in der ein Rückschlagventil vorge sehen ist.To solve this problem, the invention provides that the brake pistons are hydraulically or pneumatically actuated and that to the control a pressure line is provided, in which a check valve is featured see is.
Vorteilhaft ist hierbei, dass durch die Feststellvorrichtung mindestens ein Dreh gelenk des Höhenmess- und Anreißgerätes auf Wunsch des Bedieners in einer beliebigen Arbeitsposition blockiert werden kann und anschließend die Blockie rung gelöst werden kann, um die Mess- und Anreißtätigkeit wieder aufzuneh men.It is advantageous here that at least one turn by the locking device joint of the height measuring and marking device at the operator's request in one any working position can be blocked and then the block tion can be resolved in order to resume measuring and marking men.
Des weiteren ist von Vorteil, dass die Feststellvorrichtung eine Bremsscheibe oder einen Bremsbacken aufweist, welche von einem Bremskolben fixierbar sind. Vorteilhaft ist außerdem, dass durch Druckbeaufschlagung des Brems kolbens pneumatisch oder auch hydraulisch der Bremskolben das Drehgelenk über die Bremsscheibe arretiert, dabei ist bei plötzlichem Druckabfall gewähr leistet, dass durch ein entsprechendes Rückschlagventil die Klemmung des Drehgelenkes beibehalten wird. It is also advantageous that the locking device is a brake disc or has a brake shoe which can be fixed by a brake piston are. It is also advantageous that by pressurizing the brake piston pneumatically or hydraulically the brake piston the swivel joint locked via the brake disc, this is guaranteed in the event of a sudden drop in pressure ensures that the clamping of the Pivot joint is maintained.
Das Lösen der Klemmvorrichtung wird dadurch gewährleistet, dass eine Rück laufleitung angeordnet ist, die das auf den Bremskolben wirkende Druck medium in ein Reservoir zurückleitet. Die Ansteuerung eines entsprechenden Sicherheitsventils gewährleistet also die Arretierung der Drehgelenke, wobei durch Einschalten des Rücklaufes die Blockierung des Drehgelenkes aufgelöst werden kann.The release of the clamping device is ensured by a back Run line is arranged, the pressure acting on the brake piston medium returns to a reservoir. The control of a corresponding Safety valve thus ensures the locking of the swivel joints, whereby the blocking of the swivel joint is released by switching on the return can be.
Nach einer günstigen Ausführungsform ist vorgesehen, dass mindestens eine Feststellvorrichtung über eine Fernbedienung ansteuerbar ist. Vorteilhaft ist hierbei, dass durch Verwendung einer Fernbedienung z. B. jede Feststell vorrichtung eines einzelnen Drehgelenkes einzeln ansteuerbar ist oder es lässt sich auch durch die Fernbedienung eine Schaltung aller Feststellvorrichtungen des Höhenmess- und Anreißgerätes durchführen. Hierbei ist sichergestellt, dass jede Feststellvorrichtung durch Auslösen der Fernbedienung gleichzeitig angesteuert wird.According to a favorable embodiment, it is provided that at least one Locking device can be controlled by a remote control. It is advantageous here that by using a remote control z. B. each finding device of a single swivel joint can be controlled individually or it can the locking device also switches all locking devices of the height measuring and marking device. This ensures that each locking device by triggering the remote control at the same time is controlled.
Nach einem wesentlichen Merkmal ist vorgesehen, dass alle Drehgelenke mit einer Feststellvorrichtung versehen sind.According to an essential feature, it is provided that all swivel joints have a locking device are provided.
Alternativ wird die Aufgabe dadurch gelöst, dass der Bremskolben elektrisch über einen Stellmotor oder über einen Magneten ansteuerbar ist.Alternatively, the object is achieved in that the brake piston is electrical can be controlled via an actuator or a magnet.
Um zu gewährleisten, dass bei Stromausfall die Drehgelenke blockiert sind, ist vorgesehen, dass der Bremskolben über eine Feder arretiert und elektrisch entriegelt wird. Vorteilhaft ist hierbei, dass ein Druckfeder den Bremskolben auf die Bremsscheibe oder einen Bremsbacken presst, während zur Entriegelung der Klemmvorrichtung der entsprechende Bremskolben elektrisch, gegen die Federkraft, beaufschlagt wird. Bei einer derartigen Ausbildung lassen sich in günstiger Weise Elektromagneten einsetzen, wobei bei Strombeaufschlagung des Elektromagneten das Drehgelenk frei beweglich ist, während beim Ab schalten des Stromes für den Elektromagneten oder bei einem plötzlichen Stromausfall die entsprechende Druckfeder den Bremskolben beaufschlagt und dass Drehgelenk entsprechend arretiert.To ensure that the swivel joints are blocked in the event of a power failure provided that the brake piston is locked by a spring and electrically is unlocked. The advantage here is that a compression spring on the brake piston presses the brake disc or a brake shoe while unlocking the clamping device the corresponding brake piston electrically against the Spring force is applied. With such training can be in use electromagnets favorably, with current being applied of the electromagnet the swivel is freely movable, while when Ab switching the current for the electromagnet or in the event of a sudden Power failure the corresponding compression spring acts on the brake piston and that the swivel is locked accordingly.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen schematisch dargestellt.Preferred embodiments of the invention are in the drawings shown schematically.
Es zeigt:It shows:
Fig. 1 ein Höhenmess- und Anreißgerät mit sechs Drehgelenken, die jeweils mit einer Feststellvorrichtung versehen sind, Fig. 1 is a height gauge having six rotary joints, which are each provided with a locking device,
Fig. 2 eine parallele Ansteuerung von zwei Feststellvorrichtungen in schema tischer Darstellung. Fig. 2 shows a parallel control of two locking devices in a schematic representation.
Das in Fig. 1 dargestellte Höhenmess- und Anreißgerät besteht im wesent lichen aus dem Basisteil 14, dem Griffteil 15 sowie dazwischen angeordneten Armen 16. Das Griffteil 15 trägt dabei die Messwerkzeuge 1 oder gegebenen falls entsprechende Anreißwerkzeuge. Die zwischen dem Basisteil 14 und dem Griffteil 15 angeordnete Arme 16 weisen jeweils Drehgelenke 2a bis 2f auf. Das Messwerkzeug lässt sich bei dieser Ausführungsform gegenüber dem Basisteil 14 um sechs Achsen drehen. Jedem Drehgelenk 2 ist dabei ein Drehgeber zugeordnet, der die Messwerte direkt oder indirekt an einen Rechner (nicht dar gestellt) zur Bestimmung der jeweiligen Position des Messwerkzeuges weiter gibt. Dem Rechner kann auch ein sogenanntes Interface-Gerät vorgeschaltet werden, so dass der Rechner verschiedenste Programme mit einer entspre chend zugehörigen Software verarbeiten kann.The height measuring and marking device shown in FIG. 1 consists essentially of the base part 14 , the handle part 15 and arms 16 arranged therebetween. The handle part 15 carries the measuring tools 1 or, if appropriate, corresponding marking tools. Arranged between the base part 14 and the handle portion 15 arms 16 each have pivot joints 2a to 2f on. In this embodiment, the measuring tool can be rotated about six axes relative to the base part 14 . Each rotary joint 2 is assigned a rotary encoder, which forwards the measured values directly or indirectly to a computer (not shown) for determining the respective position of the measuring tool. A so-called interface device can also be connected upstream of the computer, so that the computer can process a wide variety of programs with corresponding software.
Um das Griffteil 15 während des Betriebes in einer Position zu fixieren, so dass der Bediener das Gerät nicht wieder in seiner Ausgangsposition zurückbringen muss, sind mindestens einem der Drehgelenke 2 jeweils eine Feststellvor richtung 3 zwischengeschaltet. Diese Feststellvorrichtungen können jedem Ge lenk 2 zugeordnet werden, so dass durch eine entsprechende Beaufschlagung der Bediener die Möglichkeit hat, eines der Drehgelenke oder alle Drehgelenke in der jeweiligen Position zu fixieren, bzw. zu arretieren. Das Griffteil 15 ver bleibt dann in seiner jeweiligen Position stehen, so dass der Bediener im An schluss daran durch Lösen der Arretierung der jeweiligen Drehgelenke 2 den Mess- oder Anreißvorgang weiterführen kann.In order to fix the handle part 15 in one position during operation so that the operator does not have to return the device to its starting position, at least one of the swivel joints 2 each has a locking device 3 interposed. These locking devices can be assigned to each joint 2 , so that the operator has the possibility of fixing or locking one of the swivel joints or all swivel joints in the respective position. The handle part 15 then remains in its respective position, so that the operator can then continue the measurement or marking process by releasing the locking of the respective swivel joints 2 .
Aus der Fig. 1 sind Feststellvorrichtungen 3 zu entnehmen, die jeweils aus Bremsscheiben 11 und Bremskolben 12 bestehen.From Fig. 1 detents are given in 3, each consisting of brake discs 11 and brake piston 12.
Aus der Fig. 2 ist schematisch eine Ansteuerung zusammen mit zwei parallel angeordneten Feststellvorrichtungen 3 dargestellt. Die Gelenkarme 16 sind mit der jeweiligen Bremsscheibe 11 drehfest verbunden, während auf die jeweilige Bremsscheibe 11 jeweils eine Feststellvorrichtung wirkt. In der Feststellvor richtung sind bei diesem Ausführungsbeispiel Bremskolben 12 angeordnet, die hydraulisch oder pneumatisch beaufschlagt werden. Aus einem Reservoir wird ein Fluid oder ein Gas, wie z. B. Luft, über eine Druckquelle 10 mit einem ent sprechend erforderlichen Druck beaufschlagt und anschließend über ein Steuerventil über die Druckleitung 4 dem Bremskolben 12 zugeführt. In der Druckleitung 4 ist ein Rückschlagventil 5 angeordnet, welches bei plötzlich auf tretendem Druckabfall schließt und damit die Feststellvorrichtung in der momentanen Position arretiert.A control is shown schematically in FIG. 2 together with two locking devices 3 arranged in parallel. The articulated arms 16 are connected for rotation with the respective brake disc 11, while on the respective brake disc 11 are each a locking device acts. In the Feststellvor direction brake pistons 12 are arranged in this embodiment, which are acted upon hydraulically or pneumatically. A fluid or a gas, such as e.g. B. air, via a pressure source 10 with an accordingly required pressure and then fed via a control valve via the pressure line 4 to the brake piston 12 . A check valve 5 is arranged in the pressure line 4 , which closes in the event of a sudden drop in pressure and thus locks the locking device in the current position.
Im Normalbetrieb wird durch eine entsprechende Ansteuerung der Rücklauf leitung 6 das in den Bremszylindern befindliche Druckmittel, welches die Bremskolben 12 beaufschlagt in das Reservoir 7 zurückgeführt, so dass in die sem Falle die Bremsscheibe 11 und damit der Gelenkarm 16 frei beweglich drehbar ist.In normal operation, the pressure medium in the brake cylinders, which acts on the brake pistons 12, is returned to the reservoir 7 by a corresponding control of the return line 6 , so that in this case the brake disc 11 and thus the articulated arm 16 can be freely rotated.
Das Steuerventil 18 ist dabei entweder über die Ansteuerungsleitung 9 oder über eine entsprechende Fernbedienung 8 beaufschlagbar. Es ist dabei ohne weiteres möglich, die Feststellvorrichtungen 3 so zu konzipieren, dass ent weder jede einzeln oder alle zusammen über die Ansteuerung bzw. die Fern bedienung gesteuert werden können. The control valve 18 can be acted upon either via the control line 9 or via a corresponding remote control 8 . It is easily possible to design the locking devices 3 so that ent can be controlled either individually or all together via the control or the remote control.
11
Mess- und Anreißwerkzeug
Measuring and marking tool
22
Drehgelenk
swivel
33
Feststellvorrichtung
Locking device
44
Druckleitung
pressure line
55
Rückschlagventil
check valve
66
Rücklaufleitung
Return line
77
Reservoir
reservoir
88th
Fernbedienung
remote control
99
Stromanschluss bzw. Ansteuerung
Power connection or control
1010
Druckquelle
pressure source
1111
Bremsscheibe
brake disc
1212
Bremskolben
brake pistons
1313
Handrad
handwheel
1414
Basisteil
base
1515
Griffteil
handle part
1616
Arme
poor
1717
Bremszylindern
brake cylinders
1818
Steuerventil
control valve
Claims (5)
dass die Bremskolben hydraulisch oder pneumatisch beaufschlagt werden
und dass zur Ansteuerung eine Druckleitung vorgesehen ist, in der ein Rückschlagventil vorgesehen ist. 1. Height measuring and marking device for three-dimensional measurement and / or tearing of workpieces, consisting of a base part, at least one movable, a measuring or scribing tool carrying and with the base part directly or indirectly connected arm, each arm with at least one swivel joint is provided, the position of the measuring and / or marking tool is passed directly or indirectly via measuring means of the respective swivel joint to a computer having a corresponding computer program for determining and / or recording and / or storing the measured values, and at least one swivel joint a locking device is provided, wherein at least one swivel joint provided with a locking device can be controlled externally electrically, hydraulically or pneumatically, and the locking device has a brake disc or a brake shoe which can be fixed by a brake piston, characterized in that
that the brake pistons are acted upon hydraulically or pneumatically
and that a pressure line is provided for actuation, in which a check valve is provided.
dass der Bremskolben (12) elektrisch über einen Stellmotor oder über einen Magneten ansteuerbar ist, und
dass der Bremskolben (12) über eine Feder arretierbar und elektrisch entriegelbar ist.5. Height measuring and marking device for three-dimensional measurement and / or tearing of workpieces, consisting of a base part, at least one movable, a measuring or marking tool carrying and with the base part directly or indirectly connected arm, each arm with at least one swivel joint is provided, the position of the measuring and / or marking tool is passed directly or indirectly via measuring means of the respective swivel joint to a computer having a corresponding computer program for determining and / or recording and / or storing the measured values, and at least one swivel joint with a Fixed locking device is provided, wherein at least one swivel joint provided with a locking device can be controlled externally electrically, hydraulically or pneumatically, and the locking device has a brake disc or a brake shoe which can be fixed by a brake piston, characterized in that
that the brake piston ( 12 ) can be controlled electrically via a servomotor or via a magnet, and
that the brake piston ( 12 ) can be locked by a spring and unlocked electrically.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE2001112977 DE10112977C1 (en) | 2001-03-17 | 2001-03-17 | Height measurement and tracking device for 3-dimensional measurement of workpiece has hydraulically or pneumatically operated brake piston for fixing position of each rotary linkage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001112977 DE10112977C1 (en) | 2001-03-17 | 2001-03-17 | Height measurement and tracking device for 3-dimensional measurement of workpiece has hydraulically or pneumatically operated brake piston for fixing position of each rotary linkage |
Publications (1)
Publication Number | Publication Date |
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DE10112977C1 true DE10112977C1 (en) | 2002-11-21 |
Family
ID=7677883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE2001112977 Expired - Fee Related DE10112977C1 (en) | 2001-03-17 | 2001-03-17 | Height measurement and tracking device for 3-dimensional measurement of workpiece has hydraulically or pneumatically operated brake piston for fixing position of each rotary linkage |
Country Status (1)
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DE (1) | DE10112977C1 (en) |
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