DE102010025230A1 - Portable and/or transportable and/or stationary height measuring and marking apparatus for measuring three-dimensional position of object in selected volume of workpiece, has three articulated arrangements comprising degrees of freedom - Google Patents

Abstract

The apparatus has a movable, measuring/marking tool (3) with an arm (5) for directly or indirectly measuring and marking a position of to be measured instruments. A computer (1) comprises a computer program for determining and/or recording and/or storing measured values. The arm consists of five rotary joints (2) rotating in degrees of freedom, so that the apparatus operates in five degrees of freedom. Three articulated arrangements are provided, where first and second arrangements comprise two degrees of freedom respectively and the third arrangement comprises one degree of freedom. The computer is a personal computer or a notebook computer or a personal digital assistant.

Description

The invention relates to a portable and / or transportable and / or stationary height measuring and marking device for particular three-dimensional measurement of the position of an object in a selected volume and / or scribing of workpieces, comprising at least one movable, a measuring or Anreißwerkzeug bearing Arm, while the position of the measuring and / or the Anreißwerkzeuges is passed via measuring means directly or indirectly to a computer program having a computer for determining and / or acquisition and / or storage of the measured values.

Height measuring and marking devices are already known (eg DE 44 03 901 A1 ), in which the portable measuring device is provided with a base part and a corresponding number of articulated arms. The articulated arms are provided with the base part or two joint parts to each other, each with a rotary joint, said hinges each having a transducer. The transducers detect the corresponding angular position of the swivel joint and transmit this data to a computer for the purpose of acquiring, determining or storing the measured values. To capture a workpiece, it requires a large number of measurements or measuring points in order to be able to image the workpiece accordingly.

In the prior art mechanical hinges have been used in rotary joints so far to prevent cable breaks. For this purpose, mechanical components are used which are firmly connected to a component, for example, dowel pins which abut against a contact surface on the opposite component. In order to increase the freedom from rotation, sliding components are used, for example plastic flakes or balls. The latter are floating and therefore do not strike until the axis of rotation has completed more than one revolution.

The use of such end stops can lead to erroneous effects due to the hammering effect. In addition, mechanical failures can occur due to hard, repeated stops.

The object of the invention is to provide a height measuring and marking device, in which an unlimited freedom of rotation is achieved while maintaining the previously known design.

To achieve this object, the invention provides that at least six hinges are provided, each hinge has a degree of freedom, so that the height measuring and Anreißgerätes comprises at least six degrees of freedom, and that the height measuring and marking a first, a second and a third articulated arrangement wherein the first articulated arrangement has at least two degrees of freedom, the second articulated arrangement two degrees of freedom and the third articulated arrangement at least one degree of freedom.

In addition, it is provided that at least three swivel joints are provided, wherein at least one of the swivel joints is unlimitedly rotatable.

A further embodiment provides that at least one of the infinitely rotatable hinges for signal transmission is provided with a corresponding number of slip rings.

It is advantageous that the height measuring and scriber device can be designed unlimited in the axes of rotation. Each unbounded axle can be fitted with slip rings to prevent cable breakage. These are intended to transmit the signals from the respective rotary encoders used within the arm from joint to joint in order subsequently to pass directly or indirectly on to a computer having a corresponding computer program for the determination and / or acquisition and / or storage of the measured values.

A preferred embodiment is shown in the figure.

It shows:

1 a height measuring and scriber device in view with two arms and a corresponding number of swivel joints.

This in 1 illustrated height measuring and marking device is designed for the three-dimensional measurement of workpieces. It basically consists of the base part, which is on the foot 4 is fixed, several movable arms 5 where one of the arms 5 a measuring or marking tool 3 wearing. The swivel joints 2 are provided with measuring equipment and give their position to a computer 1 further. The computer 1 serves for the determination and / or the acquisition and / or the storage of the measured values, which are provided by the measuring tool 3 consisting of a measuring or marking tool 3 be generated. The completed measurement is calculated by computer program and displayed if necessary.

In this height measuring and scriber device at least one of the infinitely rotatable hinges for signal transmission is provided with a corresponding number of slip rings. The axes of rotation are designed to be infinitely rotatable. each unlimited axle is equipped with slip rings. These serve to transmit the signals from the respective rotary encoders used within the arm from joint to joint, in order subsequently to pass directly or indirectly to a computer having a corresponding computer program for the determination and / or acquisition and / or storage of the measured values.

LIST OF REFERENCE NUMBERS

1

computer

2

Joint with 1 or more axes

3

Measuring or marking tool

4

foot

5

poor

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4403901 A1 [0002]

Claims (3)

Portable and / or transportable and / or stationary height measuring and marking device for particular three-dimensional measurement of the position of an object in a selected volume and / or scribing of workpieces, consisting of at least one movable, a measuring or Anreißwerkzeug bearing arm, this is the position of the measuring and / or the Anreißwerkzeuges via measuring means directly or indirectly to a, having a corresponding computer program computer for determining and / or detection and / or storage of the measured values, characterized in that at least five hinges ( 1 ) are provided, each pivot ( 1 ) has a degree of freedom such that the height measuring and marking device comprises at least five degrees of freedom, and in that the height measuring and marking device has a first, a second and a third articulated arrangement, wherein the first articulated arrangement at least two degrees of freedom, the second articulated arrangement two degrees of freedom and the third articulated arrangement has at least one degree of freedom. Height measuring and marking device according to claim 1, characterized in that at least two pivot joints ( 1 ) are provided, wherein at least one of the swivel joints ( 1 ) is infinitely rotatable. height measuring and marking device according to claim 2, characterized in that at least one of the infinitely rotatable hinges ( 1 ) is provided for signal transmission with a corresponding number of slip rings.

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