Repositioning Method of NC Milling Thread

A CNC milling and repositioning technology, applied in the direction of thread cutting machine, metal processing equipment, manufacturing tools, etc., can solve the problems of inaccurate tool setting, time-consuming, thread disorder, etc., to save tool setting time and improve tool setting Efficiency and the effect of avoiding thread disorder

Active Publication Date: 2022-05-13
CHINA ERZHONG GRP DEYANG HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the CNC milling machine is used to mill the threaded hole, when the power is cut off or the part is replaced and clamped again, there will be a problem that the tool cannot be accurately set
This is because when the threaded hole is repaired, the zero point coordinate of the milling cutter in the Z direction cannot be directly determined. The accuracy of tool setting is also poor, and it is easy to have messy threads when repairing threaded holes, which may cause scrapping of workpieces in severe cases

Method used

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  • Repositioning Method of NC Milling Thread
  • Repositioning Method of NC Milling Thread
  • Repositioning Method of NC Milling Thread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] S1, see figure 1 , install the test piece 3 on the G54 coordinate system plane of the workbench 1, and determine the zero point coordinate x of the test threaded hole 5 in the X direction with the center line of the test threaded hole 5 to be processed in the test piece 3 0 ’ and the zero point coordinate y in the Y direction 0 ’; the tip of the thread milling cutter coincides with the end face of the test threaded hole 5 to be processed to determine the zero point coordinate z of the test threaded hole 5 in the Z direction 0 '.

[0086] Install the reworked part 2 on the G55 coordinate system plane of the workbench 1, and determine the zero coordinate x of the reworked threaded hole 4 in the X direction with the center line of the reworked threaded hole 4 0 and the zero point coordinate y in the Y direction 0 ;At this time, the zero point coordinate z of threaded hole 4 in the Z direction is repaired 0 Not sure yet.

[0087] S2. Mill out the test threaded hole 5 o...

Embodiment 2

[0123] S1, see Figure 5 , install the test piece 3 on the G54 coordinate system plane of the workbench 1, and determine the zero point coordinate x of the test threaded hole 5 in the X direction with the center line of the test threaded hole 5 to be processed in the test piece 3 0 ’ and the zero point coordinate y in the Y direction 0’; the tip of the thread milling cutter coincides with the end face of the test threaded hole 5 to be processed to determine the zero point coordinate z of the test threaded hole 5 in the Z direction 0 '.

[0124] Install the reworked part 2 on the G55 coordinate system plane of the workbench 1, and determine the zero coordinate x of the reworked threaded hole 4 in the X direction with the center line of the reworked threaded hole 4 0 and the zero point coordinate y in the Y direction 0 ;At this time, the zero point coordinate z of threaded hole 4 in the Z direction is repaired 0 Not sure yet.

[0125] S2. Mill out the test threaded hole 5 o...

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PUM

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Abstract

The invention relates to the technical field of numerical control milling, and provides a repositioning method for numerical control milling threads, comprising the following steps: S1, installing a reworked part and a test piece on a workbench of a numerical control milling machine; S2, milling a test thread hole on the test piece ; S3. Under the condition that the positioning part of the thread detection and positioning tool for screwing into the test threaded hole and the positioning part of the thread detection and positioning tool for screwing into the reworked threaded hole are in the same direction in the circumferential direction of the corresponding threaded hole, measure the screw-in test thread The height difference ΔH in the Z direction between the measurement part of the thread detection and positioning tool for the hole and the measurement part of the thread detection and positioning tool screwed into the reworked threaded hole. Through the cooperation of the test piece and the thread detection and positioning tool, the zero coordinate of the reworked threaded hole in the Z direction can be indirectly determined, thereby ensuring the tool setting accuracy when the reworked threaded hole is reworked by the CNC milling machine, and avoiding the reworked thread by the CNC milling machine When the hole is repaired, the thread disorder occurs.

Description

technical field [0001] The invention relates to the technical field of numerical control milling, in particular to a repositioning method for numerical control milling threads. Background technique [0002] The universal joint shaft of the rough rolling main drive is the key component of the hot rolling mill equipment. Because of the advanced SWZ and SWP structure, the connection type is to use high-precision threads and high-strength bolts to connect the bearing gland, bearing seat and flange fork. connected. The rotation diameter of the universal joint shaft is between Φ500-Φ1430, and the thread design specifications on the flange fork are M36X3-6H~M90X4-6H. The working conditions are very harsh, so high demands are placed on the thread accuracy on the flange yoke. At present, the threaded holes on the flange yoke are processed by CNC milling machine, which has the advantages of high processing efficiency and stable and reliable quality. [0003] However, when the CNC m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23G1/32B23G1/44
CPCB23G1/32B23G1/44
Inventor 黄涛贾富云
Owner CHINA ERZHONG GRP DEYANG HEAVY IND
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