Machining method for eliminating fine knive-connecting section difference of large planes of fixed template

A technology for fixing templates and processing methods, which is applied in the field of mechanical processing, and can solve the problems of affecting the horizontal accuracy and the inability to completely eliminate the gap between the knife joints, etc., and achieve the effect of eliminating the gap between the knife joints and the hand feel.

Active Publication Date: 2015-06-17
浙江坤博精工科技股份有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the material of the fixed template is ductile iron QT450-10, it has not been possible to completely eliminate the slight difference in the knife connection on the large plane, which affects the horizontal accuracy of the equipment when it is installed and fixed.

Method used

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Embodiment Construction

[0015] A processing method for eliminating the micro-step difference between large flat planes of fixed templates, comprising the following steps:

[0016] Step 1: Select a high-precision four-axis linkage horizontal boring and milling machining center, and use cutterheads and blades;

[0017] Step 2: Rough milling: distribute the rough milling cutting amount, and process in two cuts, the rough milling of the first cut is 6mm, the rough milling of the second cut is 3mm, and the cutting line speed is 95-105m / min;

[0018] Step 3: Semi-finish milling: The semi-finish milling residue is 0.05mm, and the cutting line speed is 115-125m / min;

[0019] Step 4: Fine milling: fine milling smooth surface 0.05mm, cutting line speed 190 ~ 210m / min.

[0020] In the step 4, the one-way feed is adopted during the finish milling, and the tool is moved from bottom to top, which effectively solves the problem of vibration of the knife caused by bidirectional back and forth or resistance genera...

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Abstract

The invention provides a machining method for eliminating fine knive-connecting section difference on large planes of a fixed template. The machining method comprises the following steps of: (1) selecting a high-accuracy four-axis coupling horizontal boring and milling machining center, and adopting a knife disc and a blade; (2) roughly milling: distributing the rough-milling cutting amount, machining by twice milling, roughly milling by 6mm for the first milling, and roughly milling by 3mm for the second milling, wherein the linear speed for cutting is 95-105m / min; (3) semi-fine milling: carrying out semi-fine milling, leaving by 0.05mm, wherein the linear speed for cutting is 115-125m / min; and (4) finly milling: finly milling a finish surface by 0.05mm, wherein the linear speed for cutting is 190-210m / min. The machining method provided by the invention has the advantages that the knife-connecting section difference can be effectively eliminated, the smoothness and the brightness of the large planes are guaranteed and no section difference is felt by hands.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing method for eliminating micro-step differences between large planes of fixed templates and knives. Background technique [0002] The fixed formwork is used as a fixed base for installing nuclear power equipment. It requires extremely high precision on the large plane. The shape and position tolerance of the flatness of the large plane is 0.03mm, and it is required that there is no gap between the milling cutters on the entire large plane. Since the material of the fixed template is ductile iron QT450-10, it has been unable to completely eliminate the slight difference in the knife connection on the large plane, which affects the horizontal accuracy of the equipment when it is installed and fixed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a processing method for eliminating the small step differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/13
Inventor 厉全明
Owner 浙江坤博精工科技股份有限公司
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