Abstract:
A measuring method and system involving a measuring coordinate probe, which can be moved precisely, by appropriate actuators, with respect to a positioning platform (60) on which the probe is mounted; and whose position relative capable to said positioning platform (60) can be measured, by suitable encoders (780). The invention can be carried out with probes, actuators and encoders of different nature. The actuators (730) preferably allow the motion of the probe according to two or more independent degrees of freedom, so that the probe itself can be moved in a plane, or in a three-dimensional region of space, and its orientation can be chosen, within some suitable limits. The method and system of the invention provide very exact local measurement, even if the platform (60) does not deliver the very best precision.
Abstract:
A measuring method and system involving a measuring coordinate probe, which can be moved precisely, by appropriate actuators, with respect to a positioning platform (60) on which the probe is mounted; and whose position relative capable to said positioning platform (60) can be measured, by suitable encoders (780). The invention can be carried out with probes, actuators and encoders of different nature. The actuators (730) preferably allow the motion of the probe according to two or more independent degrees of freedom, so that the probe itself can be moved in a plane, or in a three-dimensional region of space, and its orientation can be chosen, within some suitable limits. The method and system of the invention provide very exact local measurement, even if the platform (60) does not deliver the very best precision
Abstract:
A method for scanning a surface of a workpiece 1 at a constant scanning speed /va/ using a scanning probe 2 mounted on a support 3 on a coordinate measuring machine (CMM) 4. The CMM contains a first set of drive means (6, 7, 8) to move the support according to three linear axis (x,y,z), and the support 3 contains a second set of drive means (14, 17) for actuating the movement of the scanning probe 2 with two degrees of freedom relative to said support 3. The method involves control means 33 coupled to the sets of drive means (6, 14, 17), and memory means for storing theoretical profiles and coordinates of the surface to scan.
Abstract translation:使用安装在坐标测量机(CMM)4上的支撑件3上的扫描探针2以恒定的扫描速度/ v / a扫描工件1的表面的方法.CMM包含 第一组驱动装置(6,7,8),以根据三个线性轴线(x,y,z)移动支撑件,并且支撑件3包含第二组驱动装置(14,17),用于致动 扫描探针2相对于所述支撑件3具有两个自由度。该方法包括耦合到驱动装置组(6,14,17)的控制装置33,以及用于存储要扫描的表面的理论轮廓和坐标的存储装置 。
Abstract:
Tool rack for tools of a coordinate measuring machine, wherein the guiding and retaining surfaces of the tool rack are arranged on two planes offset vertically so as to cause the tool to tilt when it is unhooked. The inventive arrangement allows the mechanical efforts during uncoupling to be reduced appreciably. This reduction is due to the tool tilting and to the residual magnetic force being divided between three retaining point, with a positive effect on the coupling precision and on the tool positioning in the tool rack.
Abstract:
Touch probe including a fixed part (250), designed to be fastened onto a measuring machine or a machine tool, and a contact feeler (30) that is mobile and orientable on two independent axes (211, 212) along a multiplicity of directions indexed in space. An actuator (300) comprising antifriction rollers and a ball bearing allows the rotation axes (211) to be unlocked and any orientation to be selected with minimized friction. In locked position, the actuator (300) withdraws under the action of return springs (336) so as not to influence the indexing accuracy.
Abstract:
Motorized indexed measuring head for a machine for measuring three-dimensional coordinates. Includes a double-action actuator to pass from a locked state, wherein any rotation of the probe feeler is prohibited, to an unlocked state, wherein the feeler can be oriented along two axes by two servomotors. The locking and unlocking mechanism is independent from the gravitational force and can operate whatever the orientation of the measuring head.
Abstract:
Motorized indexed measuring head for a machine for measuring three-dimensional coordinates. The orientable axes are actuated by motors rigidly supported on bearings or ball bearings. The rotation is transmitted to the re-orientable elements by transmission elements having sufficient play so that the indexing accuracy is not impaired.
Abstract:
Touch-triggered probe comprising a fixed part, designed to be fastened onto a measuring machine or a machine tool, and a mobile contact feeler that can be oriented on two independent axes along a multiplicity of spatial directions.
Abstract:
Touch probe for a machine for measuring coordinates, including a contact feeler (12), relatively mobile relatively to a fixed organ (1) and held in a defined and repeatable resting position by a spring (21). The probe comprises an electric circuit to detect the displacements of the feeler (12). The resting position is defined by six contact points distributed around the axis of the feeler to obtain a uniform sensitivity to lateral forces.
Abstract:
Tool-switching device for a machine for measuring coordinates wherein the tool is fastened on the tool-carrier and held by the action of elements exerting an axial force. The locking force is taken over symmetrically by the elements of a Boys connection, which increases the repeatability of the connection; in one embodiment, two pins or spheres are driven by a sliding bushing provided with two “V”-shaped slits or with two lateral gorges. In the subsequent embodiments, the pins are replaced by spheres, by levers or by a stirrup.