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Processing method for phi 52H7*850 deep hinge pin keyhole at matched position of parts of different materials

A technology of deep pin key hole and processing method, which is applied in the field of mechanical processing technology, can solve problems such as difficulty in processing high-precision ultra-deep holes, and achieve the effects of solving assembly accuracy problems, high machining accuracy and simple operation.

Inactive Publication Date: 2013-04-10
HUALI BRANCH CORP HUBEI SANHUAN METALFORMING EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this invention is to solve the problem of difficult machining of high-precision ultra-deep holes at the joints of two material assemblies, and to provide a processing method for Φ52H7×850 deep pin keyholes at the joints of different material parts

Method used

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  • Processing method for phi 52H7*850 deep hinge pin keyhole at matched position of parts of different materials
  • Processing method for phi 52H7*850 deep hinge pin keyhole at matched position of parts of different materials
  • Processing method for phi 52H7*850 deep hinge pin keyhole at matched position of parts of different materials

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Embodiment Construction

[0035] see figure 1 , the method of the present invention is used to process the Φ52H7×850 deep pin keyhole at the joint between the large flywheel 7 (ZG270-500) and the main shaft 6, and the specific process steps are as follows:

[0036] (1) Drill the center hole at the processing position of φ52H7, cutting amount: speed n=300r / min, axial feed F=10mm / min;

[0037] (2) Drilling process hole φ42×150mm, cutting amount: speed n=120r / min, axial feed F=9mm / min;

[0038] (3) Bore the φ42mm hole to the size φ45H8 and the depth is 100mm, roughness Ra=3.2, cutting amount: speed n=130r / min, axial feed F=9mm / min, the cutting depth of the last two knives t= 0.1mm;

[0039] (4) Use the φ45H7×100mm hole as the φ45mm drill guide hole; add coolant, first use the φ45mm drill to feed along the φ45H7 hole, correct the φ42mm offset of the process hole, and drill slowly until the hole tip, the depth must exceed 160mm : When the drill tip is in contact with the original hole tip and cutting, take...

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Abstract

The invention relates to a machining process, in particular to a processing method for a phi 52H7*850 deep hinge pin keyhole at a matched position of parts of different materials. The processing method comprises the following process steps of: (1) performing center drilling; (2) drilling a phi42*150mm process hole; (3) boring the phi42*150mm hole into a phi45H8*100mm hole; (4) drilling a phi45*160mm hole; (5) drilling the phi42*150mm process hole to deepen the process hole to be phi42*260mm in dimension; (6) boring the hole to be phi45H8*250mm in dimension; (7) drilling the hole to be phi45*420mm in dimension; (8) boring the hole to be phi48H6*50mm in dimension; (9) installing a guide sleeve and finely boring the hole to be phi48H6*400mm in dimension; (10) drilling the hole to be phi48*860mm in dimension; (11) boring the hole to be phi51.5H6*850mm in dimension; (12) boring the hole to be phi51.7H6*850mm in dimension; and (13) finely boring the hole to be phi52H7*850mm in dimension. By adopting the front boring and rear supporting gradually deepening processing method, the high-accuracy deep hole processing at the joint of two materials is realized, and the assembly accuracy problem of a large-sized transmission part is solved. The processing method is mainly used for processing the hinge pin keyhole between a large-sized flywheel and a main shaft.

Description

technical field [0001] The invention relates to a mechanical processing technology, in particular to a processing method for a Φ52H7×850 deep-pin key hole at a matching part of parts of different materials. Background technique [0002] The connection between the large flywheel and the main shaft generally adopts a spline or a multi-tooth flat key, but the parts are too large, the processing efficiency is low, the processing accuracy is difficult to guarantee, and it is even more difficult to achieve the accuracy required by the design after assembly. [0003] Assembling a large flywheel (generally adopting ZG270-500) and a main shaft (generally adopting 35CrMoV) into a whole, and using multiple pin shafts as keys to transmit torque at the joint between the two can solve the problem of assembly accuracy of large transmission parts, but different materials The processing of ultra-deep precision holes at combined fits is another technical problem. In the national standard for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B35/00
Inventor 余来胜易振明周红祥黄槊
Owner HUALI BRANCH CORP HUBEI SANHUAN METALFORMING EQUIP
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