Machining process of combined boring spindle

A processing technology and boring shaft technology, which is applied in the field of processing technology of combined boring shafts, can solve the problems of difficult to meet the requirements of processing accuracy, geometric tolerance and dimensional accuracy, and achieve the effect of reducing processing difficulty and improving processing accuracy.

Active Publication Date: 2010-02-03
通用技术齐齐哈尔二机床有限责任公司
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Problems solved by technology

[0002] The boring shaft is the main shaft of the milling and boring machine, and it is an important part to ensure the machining accuracy. It is a hollow long shaft with high requirements for shape tolerance and dimensional accurac...

Method used

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  • Machining process of combined boring spindle
  • Machining process of combined boring spindle
  • Machining process of combined boring spindle

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing:

[0017] Depend on figure 1 combine figure 2 , image 3 As shown, a machining process for a combined boring shaft mainly includes the following steps:

[0018] ①. The materials of the next three sections are normalized, rough machined, and aged separately: the material of the front section 1 and the middle section 2 is 38CrMoALA, and the blank is forging-normalizing. After rough machining, it is quenched and tempered and subjected to three aging treatments; the material of the rear section 3 is It is 42CrMo, the blank is forging-normalizing, and an aging treatment is carried out after rough machining;

[0019] ②. The outer circles a and b of the front section 1 are matched with the middle section 2 to ensure a certain amount of interference. The dimension c is processed to meet the requirements of the drawing, the inner circle f of the front section 1 and the inner circle...

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Abstract

The invention relates to a machining process of a combined boring spindle, mainly solving the problem that the coaxiality of a front end hole, a tail hole and an outer ring can not reach 0.01 requiredin the prior boring spindle machining. The method comprises the following steps: blanking and respectively normalizing, rough machining and ageing; match grinding the outer circles a, b of a front section (1) and a middle section (2), processing dimension c to reach the requirement of a graph paper, grinding an inner circle f in the front section (1) and an inner circle g in a back section (3) toreach the requirement of the graph paper, processing an outer circle d and an inner circle e of the middle section (2), match grinding the outer circle e of the back section (3) and the middle section (2); combining the front section (1) with the middle section (2), processing the left end surface of an overall length, and then nitriding the combined front section (1) and the combined middle section (2), injecting glue by glue injection holes; combining the back section (3) with the front section (1) and the middle section (2), and after fastening, machining all dimensions to reach the requirement of the graph paper. The method for processing the combined boring spindle has low processing difficulty and high precision and reduces the labor intensity.

Description

Technical field: [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a processing technology of a combined boring shaft. Background technique: [0002] The boring shaft is the main shaft of the milling and boring machine, and it is an important part to ensure the machining accuracy. It is a hollow long shaft with high requirements for shape tolerance and dimensional accuracy. The workpiece is relatively long. During processing, it is necessary to process one end first, then change the direction and then process the other end. Multiple clamping makes it difficult to meet the processing accuracy requirements. Invention content: [0003] In order to overcome the deficiency that the coaxiality between the front hole, the tail hole and the outer circle cannot reach the required 0.01 in the existing boring shaft processing, the present invention provides a processing technology for the combined boring shaft, the processin...

Claims

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Application Information

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IPC IPC(8): B23B19/02
Inventor 谷淑娟曲波孙国财程凤兰丁岩张友胜
Owner 通用技术齐齐哈尔二机床有限责任公司
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