Rotating shaft structure of main shaft of processing machine

Abstract

The invention relates to a rotating shaft structure of a main shaft of a processing machine. The rotating shaft structure is suitable for being assembled on a sleeve and comprises a shaft body, the shaft body is pivoted on the sleeve, an extending section and a combining section are sequentially and integrally formed along the axial direction, and the extending section and the combining section are both positioned outside the sleeve. Therefore, the joint of a joint section of the shaft body and a cutter handle is moved forwards to the processing position, so that a cutter head with a shorter cutter handle can be used after a cutter handle groove of the joint section is combined with the cutter handle, and namely, a workpiece can be subjected to deep groove milling (or deep hole processing), so that the structural strength of a rotating shaft is improved, and meanwhile, the rigidity of the cutter head can be ensured, and the processing accuracy is improved.

Description

technical field [0001] The invention relates to the main shaft of a processing machine, in particular to a rotating shaft structure of the main shaft of a processing machine. Background technique [0002] Such as figure 1 As shown, it shows the local state diagram of the main shaft 10 combined with the tool handle 100 of a general processing machine. Protective cover 14 is arranged on the part and is passed through for described rotating shaft 11, and during operation, sleeve 13 and protective cover 14 are fixed form, and rotating shaft 11 then drives knife handle 100 to be in the rotating state relative to sleeve 13, by knife handle The combined cutter head 101 on the 100 performs processing operations on the workpiece. [0003] Generally speaking, when processing a workpiece with a deep hole, it is necessary to use a tool holder 100 with a longer tool handle 102. However, when processing in this way, the joint between the spindle 10 and the tool holder 100 is the weakest...

AI Technical Summary

Problems solved by technology

[0003] Generally speaking, when processing a workpiece with a deep hole, it is necessary to use a tool holder 100 with a longer tool handle 102. However, when processing in this way, the joint between the spindle 10 and the tool holder 100 is the weakest. place, that is, the junction of the keyway 104 of the knife handle 100 and the restraint key 111 of the rotating shaft 11. At the same time, the length of the knife handle 102 is too long to easily cause the cutter head 101 fixed on the knife handle 100 to shake. Therefore, when heavy cutting It will affect the cutting efficiency, and will affect the machining accuracy when finishing

[0004] In addition, since the inserting portion 103 of the knife handle 100 is inserted and positioned on the main shaft 10, and only the keyway 104 of the knife handle 100 interacts with the binding key 111 fixed on the rotating shaft 11, the main shaft 10 and the rotating shaft 11 are locked together. The joint between the handle 100 and the processing part of the cutter head 101 is too far away, so that the rotating shaft 11 is in the process of processing rotation and processing operations, and the locking position between the knife handle 100 and the rotating shaft 11 is caused by the excessive rotation of the knife handle 100. Larger force, resulting in easy damage and deformation of the handle 100 and the rotating shaft 11

[0005] It is worth noting that when processing workpieces with deep holes, the long-nose end spindle can also be used to overcome the above defects, that is, the long-nose end spindle can be used for deep hole processing or grooves with a shorter handle Milling ensures the rigidity of the cutter head and improves the machining accuracy. However, because the outer diameter of the long nose of the spindle is too large, the cutter head is relatively large, so it cannot be used for deep hole processing with a small diameter or a concave hole with a small groove diameter. Groove milling processing, and at the same time, it is impossible to process small inner angles for smaller square grooves and square holes, which highlights the defect of insufficient applicability

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