Method, control device and numerical control machine tool for repairing threaded pipe body by numerical control machine tool
A technology of CNC machine tools and threaded pipes, which is applied in the field of CNC machine tools, can solve the problems of low thread maintenance efficiency, low precision, and high scrap rate, and achieve the effects of reducing scrap rate, improving precision, and high efficiency
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Embodiment 1
[0079] figure 1 Schematic flow chart of the thread repair method provided for this application; refer to figure 1 , the thread maintenance method of the present application, comprising:
[0080] S101, the CNC machine tool fixes the workpiece with threads;
[0081] S102, the CNC machine tool performs tool setting according to the thread of the workpiece, so as to adjust the position of the starting coordinate of the CNC machine tool, so that the bed tool generates a track that matches the old thread;
[0082] Among them, the specific methods of tool setting include: comparing and correcting the tool setting method and / or entering the tool and correcting the tool setting method;
[0083] At the same time, the comparative correction method has the advantages of fast measurement, fast tool setting and high efficiency; the tool feed correction method has the advantages of accurate tool setting, high precision and simple conversion formula.
[0084] S103, the CNC machine tool pro...
Embodiment 2
[0087] figure 2 Schematic flow chart of the comparison and correction of the knife setting method provided for this application; refer to figure 2 , the comparative modified knife setting method of this application, including:
[0088] S201, acquiring the data information of the thread; the data information of the thread includes: the taper of the thread, the pitch, the tooth height, the angle, the rotation angle difference and the front and rear displacement difference caused by the thread pipe body being installed on the machine tool due to its own rotation;
[0089] S202, based on the thread information, the numerical control machine tool simulates turning the thread;
[0090] S203, acquiring data information when the numerical control machine tool simulates turning the thread;
[0091] S204, based on the data information and the data information of the thread when the numerical control machine tool simulates turning the thread, calculate the break-off point when the be...
Embodiment 3
[0126] Figure 4 Schematic flow chart of the feed correction method provided for this application; refer to Figure 4 , the comparative feed correction method of this application, including:
[0127] S401, the CNC machine tool performs feed operation until the bed knife of the CNC machine tool touches one side of the thread;
[0128] S402, obtain the X-axis position information of the bed knife at this time, and calculate the correction value required by the bed knife based on the position information of the X-axis of the bed knife and the tooth slope relationship and taper relationship of the thread;
[0129] S403, correcting the Z-axis displacement of the bed tool based on the correction value.
[0130] With this setting, the position of the tool can be corrected during the process of tool feeding, which further improves the precision of tool setting.
[0131] Further, step 402 specifically includes:
[0132] Obtain the feed amount of the bed knife at this time;
[0133...
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