Numerical control machine tool for thread milling and thread milling method
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A technology for milling and CNC machine tools, applied in the field of metal cutting, can solve problems such as inability to meet processing requirements, and achieve the effect of reducing error probability and programming time, wide application range, and improving efficiency
Active Publication Date: 2020-05-15
HUDONG HEAVY MACHINERY
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The inherent processing program cycle on the original CNC machine tool cannot meet the new processing requirements
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example 1
[0130] Example 1, large diameter thread milling.
[0131] Processing analysis: In the connection of large parts, larger diameter screw holes will be used. The price of a single tap can exceed 10,000, and the cost can be reduced by thread milling.
[0132] At the same time, stainless steel or even titanium alloy parts are used in large parts used in wind power and other fields, and the blank cost of a single part is relatively high. Rough machining + finishing + smoothing machining in a continuous decreasing manner can effectively control the quality of screw hole processing.
[0133] The following is a processing case of the M100 exhaust valve screw hole in the cylinder head of a marine low-speed diesel engine.
[0134] Processing setting: set the thread milling processing position as the inner hole, set the thread milling direction as right-handed, set the thread taper as 0, set the number of helixes as 1, and set the processing method as rough machining + finishing + For s...
example 2
[0139] Example 2, NPT 2” American standard tapered pipe thread.
[0140] Processing analysis: the M10 lifting screw hole of the marine fuel distribution block is a left-handed thread;
[0141] Processing setting: set the thread milling processing position as the inner hole, set the thread milling rotation direction as right-handed, set the thread taper as 1 / 16, set the number of helix lines as 1, and set the processing method as rough machining + finishing Processing + smoothing processing, set thread diameter to 60.09, set thread pitch to 11.45, set thread milling safety depth to 5, set thread milling start depth to 2, thread milling effective depth to 26.5, finishing allowance to 0.1 mm, the number of rough machining is 2 times, and the machining accuracy of taper thread is 0.5mm.
[0142] When the set diameter and depth logic relationship is wrong, the thread milling module will provide diameter and depth setting alarm signals to the CNC machine tool and notify the user of...
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Abstract
The invention discloses a numerical control machine tool for thread milling and a thread milling processing method. The numerical control machine tool is additionally provided with a thread milling module, the thread milling module comprises a thread-milling processing position analysis unit, a thread-milling turning direction analysis unit, a thread taper analysis unit, a thread helix quantity analysis unit, a thread-milling processing mode analysis unit, a logical judgment unit, a computing unit, an output unit and a feedback receiving unit. The processing method includes the steps that whether the processing position of thread milling is outer circle thread milling or inner hole thread milling is analyzed; whether the thread turning direction is right turning thread milling or left turning thread milling is analyzed; whether a thread is a cylindrical thread or a conical thread is analyzed; whether the quantity of a thread helix is a single or multiple is analyzed; whether the processing mode is rough-processing-containing milling, single finish machining milling or sleeking milling is analyzed; data is output to the numerical control machine tool, and processing is carried out till the shape and the depth which are defined by a user are achieved. According to the numerical control machine tool for thread milling and the thread milling processing method, the efficiency of thread milling processing is improved, the quality and the processing flexibility of a product are improved, and the application range is wide.
Description
technical field [0001] The invention relates to thread processing of metal components, in particular to a numerically controlled machine tool for thread milling and a thread milling method, belonging to the technical field of metal cutting. Background technique [0002] The application of CNC boring and milling machines, machining centers and other equipment is becoming more and more common, and the types of parts processed by them are also increasing. How to perform thread milling according to the needs of parts, process needs and processing needs has become a problem worth exploring. [0003] With the rapid development of CNC technology and cutting tool technology, the complexity of the part structure, thread milling processing methods and requirements have also made great progress. The inherent processing program cycle on the original CNC machine tool cannot meet the new processing requirements. [0004] How to improve the performance of CNC machine tools in thread milli...
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