阅读说明：本技术 用于接触触发式坐标机中的测量循环生成的方法、计算机程序和设备 (Method, computer program and device for measurement cycle generation in a touch-triggered coordinate machine ) 是由 马汀·彼得·舒摩斯 于 2019-08-12 设计创作，主要内容包括：描述了一种用于生成用于使用由诸如机床(34)等坐标定位设备承载的测量探头(4；30)来检查物体(82)的测量循环的方法。所述测量循环包括测量路径,所述测量探头(4；30)沿着所述测量路径相对于所述物体(82)移动,以使得能够使用一系列接触触发式测量来检查所述物体(82)。所述方法包括在所述物体(82)的表面上定义多个接触触发式测量点(80a至80e)的步骤。所述多个接触触发式测量点(80a至80e)中的每一个都具有相关联的间隔位置(84a至84e),从所述相关联的间隔位置使所述测量探头朝向所述接触触发式测量点(80a至80e)加速,使得所述多个接触触发式测量点中的每一个都与所述相关联的间隔位置(84a至84e)分隔开间隔距离(S-1至S-5)。所述方法进一步包括为所述多个接触触发式测量点(80a至80e)中的至少一些接触触发式测量点定义不同的间隔距离(S-1至S-5),以及基于与每个接触触发式测量点(80a至80e)相关联的间隔距离(S-1至S-5)来计算在获取所述接触触发式测量点时要使用的探测给进速率(F-1至F-5)。还描述了对应的计算机程序和设备。(A method is described for generating a measurement cycle for inspecting an object (82) using a measurement probe (4; 30) carried by a coordinate positioning apparatus, such as a machine tool (34). The measurement cycle comprises a measurement path along which the measurement probe (4; 30) is moved relative to the object (82) to enable inspection of the object (82) using a series of touch-triggered measurements. The method comprises the step of defining a plurality of touch-triggered measurement points (80a to 80e) on the surface of the object (82). Each of the plurality of touch trigger measurement points (80 a-80 e) has an associated spaced position (84 a-84 e) from which the measurement probe is accelerated towards the touch trigger measurement point (80 a-80 e) such that the measurement probe is caused to move in a direction away from the touch trigger measurement pointEach of the plurality of touch-triggered measurement points is separated from the associated spaced location (84 a-84 e) by a spacing distance (S) 1 To S 5 ). The method further comprises defining different separation distances (S) for at least some of the plurality of touch-triggered measurement points (80 a-80 e) 1 To S 5 ) And based on the separation distance (S) associated with each touch-triggered measurement point (80 a-80 e) 1 To S 5 ) To calculate a probe feed rate (F) to be used in acquiring said touch-triggered measurement points 1 To F 5 ). Corresponding computer programs and devices are also described.)

1. A method for generating a measurement cycle for inspecting an object using a measurement probe carried by a coordinate positioning apparatus, the measurement cycle comprising a measurement path along which the measurement probe moves relative to the object to enable inspection of the object using a series of touch-triggered measurements, the method comprising the steps of:

defining a plurality of touch trigger measurement points on the surface of the object, each of the plurality of touch trigger measurement points having an associated spaced position from which the measurement probe is accelerated towards the touch trigger measurement point, each of the plurality of touch trigger measurement points being separated from the associated spaced position by a spaced distance,

characterized in that the method comprises: the method further includes defining different separation distances for at least some of the touch-trigger measurement points, and calculating a probe feed rate to be used in acquiring the touch-trigger measurement points based on the separation distance associated with each touch-trigger measurement point.

2. A method according to claim 1, wherein the probe feed rate calculated for each touch trigger measurement point ensures that the probe feed rate has been accelerated to reach before the touch trigger measurement point is measured.

3. A method according to any preceding claim, wherein the detected feed rate calculated for each touch trigger measurement point is a highest feed rate which ensures that the detected feed rate has been accelerated to before the measurement of the touch trigger measurement point is taken.

4. A method according to any preceding claim, comprising the step of calculating the probe feed rate separately for each touch-triggered measurement point.

5. A method according to any preceding claim, wherein the probe feed rate is calculated using acceleration characteristics of the machine tool.

6. A method according to any preceding claim, wherein compensation is applied to touch-triggered measurement points acquired at different probe feed rates, the compensation taking into account that the measurement probe establishes a substantially constant time delay between the position sensing relationship with each touch-triggered measurement point and the coordinate positioning apparatus acquiring position information.

7. A method according to any preceding claim wherein the coordinate positioning apparatus comprises a machine tool.

8. The method of claim 7, wherein the machine tool includes a digital controller having a direct SKIP input for receiving a trigger signal from the measurement probe.

9. The method of claim 8, wherein said digital controller has a direct SKIP input with a response time of less than 1 millisecond.

10. The method of claim 9, wherein the digital controller has a direct SKIP input with a response time of less than 100 microseconds.

11. A method according to any preceding claim, wherein the measurement probe is a contact probe having a deflectable stylus for contacting the object.

12. A method according to any preceding claim, wherein the measurement probe is a flexible trigger probe.

13. A computer program product comprising instructions for implementing the method according to any preceding claim when executed on a suitable computer.

14. A coordinate positioning apparatus comprising a measurement probe and a processor configured to generate a measurement cycle for inspecting an object, the measurement cycle comprising a measurement path along which the measurement probe is moved relative to the object to enable inspection of the object using a series of contact-triggered measurements, the processor generating the measurement cycle by defining a plurality of contact-triggered measurement points on a surface of the object, each of the plurality of contact-triggered measurement points having an associated standoff position towards which the measurement probe accelerates from the associated standoff position, each of the plurality of contact-triggered measurement points being separated from the associated standoff position by a standoff distance, the processor is configured to define different separation distances for at least some of the plurality of touch-trigger measurement points, and to calculate a probe feed rate to be used in acquiring the touch-trigger measurement points based on the separation distance associated with each touch-trigger measurement point.

15. The coordinate positioning apparatus of claim 14 comprising a machine tool having a numerical controller with a direct SKIP input.