Control method of preventing error in bamboo hat automatic tool changer (ATC) of vertical machining centre
A vertical machining center and hat-type tool magazine technology, which is applied in the direction of program control, computer control, general control system, etc., can solve the problems of abnormal processing, increased maintenance cost of the manufacturer, and damage to the tool magazine.
Inactive Publication Date: 2012-06-06
宁波恒威机械有限公司
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Problems solved by technology
It is not allowed to interrupt the tool change process during this process, otherwise there will be random tool phenomenon, which will bring great inconvenience to the machine tool users and increase the maintenance cost of the manufacturer at the same time
[0003] figure 1 It is a general flowchart of tool change logic. In this control mode, if the tool change process is interrupted after the tool magazine moves in, the tool magazine will stop at the spindle side, and human intervention is required to push the tool magazine out. And in many cases it will cause chaos
Cause processing can not be carried out normally, and will damage the tool magazine
Method used
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Embodiment 1
[0060] Example 1: Siemens 802S / C does not have address signals for interaction between PLC and NCK. Therefore, it must only be processed on the PLC when judging whether the recorded tool magazine is disordered or not and the realization of the new tool change logic. 802D has the interface address between PLC and NCK, but it can be realized by the same method.
[0061] After the tool change is interrupted, the tool change macro program:
[0062] %_N_L6_MPF
[0063] ;$PATH= / _N_MPF_DIR
[0064] ;IF $P_ISTEST GOTOF END
[0065] IF $P_TOOLNO==$P_TOOLP GOTOF END1
[0066] ;IF $P_TOOLNO==0 GOTOF END2
[0067] IF $P_TOOLP==0 GOTOF END3
[0068] IF $P_TOOLP > 18 GOTOF END
[0069] M85
[0070] D0 G500
[0071] G153G90G1Z=$MN_USER_DATA_FLOAT[0]F15000
[0072] M5
[0073] M90
[0074] G4F0.2
[0075] M89
[0076] M91
[0077] G4F0.2
[0078] STOPRE
[0079] M92
[0080] G4F0.8
[0081] STOPRE
[0082] G153 G90G1Z=$MN_USER_DATA_FLOAT[0]+30F2000
[0083] G153 G90G1Z=$MN...
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The invention relates to a control method for prevention of chaos tool in a vertical machining centre bamboo hat tool changer, comprising the following steps: (1), according to the general tool change logic flow, marking and processing different conditions occurred after each work step is interrupted, and marking whether the chaos tool exists after tool change is interrupted; (2) when the tool change procedure starts, reading whether the chaos tool marks exist; (3) if no chaos tool marks exist, moving a Z axis to the position of a tool change point, orienting a main spindle, moving the tool changer in and returning the tool, and unloading the main spindle; and (4) moving the Z axis to a position for tool change, the tool changer rotating to search a target tool number, the Z axis reaching the position of the tool change point, fastening the main spindle and refreshing a tool table, moving the tool changer out, releasing the orientation of the main spindle, and finishing the tool change procedure. The method has the following advantages: when the tool changer is interrupted during the tool changing process, processing is carried out to ensure that no chaos tool exists during the next tool change process; and during the tool changing process, even under the condition of arbitrary tool change interruption, the tool changer can be rectified, thus realizing accurate change of the next tool.
Description
technical field [0001] The invention relates to the field of numerical control machining centers and motion control, in particular to a control method for preventing chaotic knives in a hat-type tool magazine of a vertical machining center. Background technique [0002] At present, in the CNC system using hat-style machining centers, the tool change process used by most machine tool manufacturers is to return the tool, the Z axis rises to the tool change preparation position, the tool magazine rotates (to find the target tool), and the Z axis drops to The position of the tool change point, the process of grabbing the tool and returning the tool magazine. During this process, it is not allowed to interrupt the tool change process, otherwise there will be random tool phenomenon, which brings great inconvenience to the machine tool users and increases the maintenance cost of the manufacturer. [0003] figure 1 It is a general flowchart of tool change logic. In this control mo...
Claims
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IPC IPC(8): G05B19/406
Inventor 蔡向华张军宁
Owner 宁波恒威机械有限公司