Apparatus for changing operating modules on a coordinate positioning machine

Abstract

A storage port ( 20 ) for separating a magnetically coupled task module ( 18 ) from a modular probe ( 16 ) mounted on a machine comprises a housing ( 22 ) and arm ( 24 ) receivable by the task module ( 18 ). A mechanism is provided for separating the task module from the probe body using a mechanical advantage, such that physical movement of the machine actuates the mechanism thereby separating the task module ( 18 ) from the modular probe ( 16 ). The arm ( 24 ) may be rotatable about a pivot ( 26 ) such that on moving the probe upwards, the task module ( 18 ) is also pulled upwards, causing the arm ( 24 ) and hence the task module ( 18 ) to rotate about the pivot ( 26 ) and thus breaking contact between the task module ( 18 ) and the probe ( 16 ) with a tilting action. Damping means ( 38, 48, 60, 62 ) are provided to ensure smooth and controlled movement of the arm ( 24 ).

1. A storage port for separating a releasably coupled task module from a retaining module, said retaining module and storage port being located on different and relatively movable parts of a machine, the storage port comprising:
 a member for engagement with a task module;  
 a mechanism for separating the task module from the retaining module using a mechanical advantage;  
 whereby physical movement of the retaining module relative to the storage port actuates the mechanism, thereby separating the task module from the retaining module and whereby the mechanism has a tilting action which causes the task module to separate from the retaining module with a component of rotational motion.  
 
     
     
       2. A storage port according to  claim 1  wherein the mechanism levers the task module and retaining module apart. 
     
     
       3. A storage port according to  claim 2  wherein the member is part of the mechanism. 
     
     
       4. A storage port according to  claim 3  wherein the member is rotatable about a pivot, such that on linear movement of the retaining module relative to the storage port the task module is also pulled linearly, causing the member and hence the task module to rotate about the pivot and thus breaking contact between the task module and the retaining module with a tilting action. 
     
     
       5. A storage port according to  claim 3  wherein a damper is provided to ensure smooth and controlled movement of the member. 
     
     
       6. A storage port according to  claim 5  wherein the damper comprises a damping plate which is adjacent and substantially parallel to one of the member and a surface of the storage port and mounted on the other of the member and the surface; wherein a viscous substance is provided between the damping plate and said one of the member and the surface; such that on movement of the member, the damping plate moves with respect to said one of the member and the surface. 
     
     
       7. A storage port according to  claim 6  wherein biasing means are provided to push the damping plate against one of the member and the surface to which it is adjacent. 
     
     
       8. A storage port according to  claim 5  wherein the damping is provided by the pivot which is made from a flexible substance. 
     
     
       9. A storage port according to  claim 1  wherein the member has a cut-out for receiving the task module. 
     
     
       10. A storage port according to  claim 9  wherein the cut-out is provided with sprung fingers to hold the task module in position on the member. 
     
     
       11. A storage port according to  claim 10  wherein the sprung fingers are integral with the member. 
     
     
       12. A storage port according to  claim 9  wherein the task module is held in position on the member by magnetic means. 
     
     
       13. A storage port for separating a releasably coupled task module from a retaining module, said retaining module and storage port being located on different and relatively movable parts of a machine, the storage port comprising:
 a member for engagement with a task module;  
 a second member for engagement with the retaining module and means to separate the two members on upwards movement of the machine and retaining module when the modules are located in the storage port.  
 
     
     
       14. A storage port according to  claim 13  wherein the means to separate the two members comprises a cam located between the two members which is caused to rotate on upwards movement of the retaining module, when said retaining module is located in the storage port, thereby forcing the two members apart. 
     
     
       15. A storage port according to  claim 14  wherein a rack and pinion arrangement is used to cause rotation of the cam on said upwards movement of the retaining module. 
     
     
       16. A storage port according to  claim 13  wherein biasing means are provided to bias the member and second member towards one another. 
     
     
       17. A storage port according to  claim 13  wherein guide means are provided to maintain the member and the second member in a substantially parallel arrangement. 
     
     
       18. A storage port for separating a releasably coupled task module from a retaining module, said retaining module and storage port being located on different and relatively movable parts of a machine, the storage port comprising:
 a relatively fixed member;  
 a relatively movable member which is engageable with a task module, said movable member being rotatable with respect to the fixed member about a pivot thereby to tilt said task module;  
 whereby when the task module is engaged with the movable member, linear movement of the retaining module relative to the storage port causes the movable member and the task module to rotate about the pivot, and thus breaking contact between the task module and the retaining module with a tilting action.  
 
     
     
       19. A storage port for separating a releasably coupled task module from a retaining module, said retaining module and storage port being located on different and relatively movable parts of a machine, the storage port comprising:
 a member which is engageable with a task module;  
 a rotatable cam located between the task module and retaining module, when said modules are located in the storage port;  
 whereby rotation of the cam separates the task module from the retaining module.  
 
     
     
       20. A storage port for separating a releasably coupled task module from a retaining module, at least one of the retaining module or the storage port being movable relative to the other, the storage port comprising:
   a structure having  ( a )  an opening for receiving the task module and  ( b )  a portion that is configured so as to engage with the task module such that, upon movement of at least one of the retaining module or the storage port relative to the other, the task module is caused to tilt to thereby facilitate separation of the task module from the retaining module.     
     
     
       21. The storage port according to  claim 20  wherein the opening is generally U- shaped.   
     
     
       22. The storage port according to  claim 20  wherein the portion extends into the opening. 
     
     
       23. The storage port according to  claim 20  wherein the portion engages with a recess in the task module. 
     
     
       24. The storage port according to  claim 20  wherein the portion levers the task module and the retaining module apart. 
     
     
       25. The storage port according to  claim 20  wherein the tilting causes the task module to initially break contact with the retaining module along one edge. 
     
     
       26. The storage port according to  claim 20 , including a plurality of fingers that hold the task module in position in the storage port. 
     
     
       27. The storage port according to  claim 26  wherein the plurality of fingers comprises two fingers. 
     
     
       28. The storage port according to  claim 26  wherein the fingers are biased towards the task module once the task module is in position in the storage port. 
     
     
       29. The storage port according to  claim 26  wherein the fingers comprise sprung fingers. 
     
     
       30. The storage port according to  claim 20  wherein the storage port includes a lid to cover and thereby protect the task module when it is separated from the retaining module. 
     
     
       31. The storage port according to  claim 30  wherein the lid is biased towards a position where it covers the task module but is retractable so as to move out of the way when a task module is being inserted into or retrieved from the storage port. 
     
     
       32. A storage port for separating a releasably coupled task module from a retaining module, at least one of the retaining module or the storage port being movable relative to the other, the storage port comprising:
   a member configured so as to engage with the task module such that, upon movement of at least one of the retaining module or the storage port relative to the other, the member causes a tilting action of the task module to thereby facilitate separation of the task module from the retaining module.     
     
     
       33. The storage port according to  claim 32  wherein the member engages with a recess in the task module. 
     
     
       34. The storage port according to  claim 32  wherein the member levers the task module and the retaining module apart. 
     
     
       35. The storage port according to  claim 32  wherein the tilting causes the task module to initially break contact with the retaining module along one edge. 
     
     
       36. The storage port according to  claim 32 , including a plurality of fingers that hold the task module in position in the storage port. 
     
     
       37. The storage port according to  claim 36  wherein the plurality of fingers comprises two fingers. 
     
     
       38. The storage port according to  claim 36  wherein the fingers are biased towards the task module once the task module is in position in the storage port. 
     
     
       39. The storage port according to  claim 36  wherein the fingers comprise sprung fingers. 
     
     
       40. The storage port according to  claim 32  wherein the storage port includes a lid to cover and thereby protect the task module when it is separated from the retaining module. 
     
     
       41. The storage port according to  claim 40  wherein the lid is biased towards a position where it covers the task module but is retractable so as to move out of the way when a task module is being inserted into or retrieved from the storage port. 
     
     
       42. A storage port for separating a releasably coupled task module from a retaining module, at least one of the retaining module or the storage port being movable relative to the other, the storage port comprising:
   a task module holding area; and        a member configured so as to engage with the task module such that, upon movement of at least one of the retaining module or the storage port relative to the other, the member causes a tilting action of the task module to thereby facilitate separation of the task module from the retaining module.     
     
     
       43. The storage port according to  claim 42  wherein the member extends into the task module holding area. 
     
     
       44. The storage port according to  claim 42  wherein the member engages with a recess in the task module. 
     
     
       45. The storage port according to  claim 42  wherein the member levers the task module and the retaining module apart. 
     
     
       46. The storage port according to  claim 42  wherein the tilting causes the task module to initially break contact with the retaining module along one edge. 
     
     
       47. The storage port according to  claim 42 , including a plurality of fingers that hold the task module in position in the storage port. 
     
     
       48. The storage port according to  claim 47  wherein the plurality of fingers comprises two fingers. 
     
     
       49. The storage port according to  claim 47  wherein the fingers are biased towards the task module once the task module is in position in the storage port. 
     
     
       50. The storage port according to  claim 47  wherein the fingers comprise sprung fingers. 
     
     
       51. The storage port according to  claim 42  wherein the storage port includes a lid to cover and thereby protect the task module when it is separated from the retaining module. 
     
     
       52. The storage port according to  claim 51  wherein the lid is biased towards a position where it covers the task module but is retractable so as to move out of the way when a task module is being inserted into or retrieved from the storage port. 
     
     
       53. A storage port for separating a releasably coupled task module from a retaining module, at least one of the retaining module or the storage port being movable relative to the other, the storage port comprising:
   a generally U - shaped opening for receiving the task module; and        a member extending into the opening and configured so as to engage with a recess in the task module;        engagement between the member and the task module being such that, upon movement of at least one of the retaining module or the storage port relative to the other, the member causes the task module to tilt, and initially break contact with the retaining module along one edge, to thereby facilitate separation of the task module from the retaining module.     
     
     
       54. A machine comprising:
   a retaining module;        a task module releasably coupled to the retaining module; and        a storage port;        at least one of the retaining module or the storage port being movable relative to the other;        the storage port comprising a member configured so as to engage with the task module such that, upon movement of at least one of the retaining module or the storage port relative to the other, the member causes a tilting action of the task module to thereby facilitate separation of the task module from the retaining module.     
     
     
       55. A magazine comprising at least one storage port for separating a releasably coupled task module from a retaining module, at least one of the retaining module or the storage port being movable relative to the other, the storage port comprising:
   a task module holding area; and        a member configured so as to engage with the task module such that, upon movement of at least one of the retaining module or the storage port relative to the other, the member causes a tilting action of the task module to thereby facilitate separation of the task module from the retaining module.     
     
     
       56. The magazine according to  claim 55  wherein the member extends into the task module holding area.