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Controllable precision finishing process for surface of high-speed tool constraint abrasive part

A technology for finishing and parts, which is applied in the direction of metal processing equipment, manufacturing tools, grinding/polishing equipment, etc., can solve problems such as difficult product quality, product quality impact, time-consuming and laborious, and achieve a wide range of applications and eliminate The effect of defective layers

Inactive Publication Date: 2015-05-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional material surface finishing methods include: (1), manual grinding, which is time-consuming and laborious, and it is difficult to fundamentally improve the quality of the product; (2), vibration finishing method, which is comparable to manual grinding The advantage is high efficiency, but the disadvantage is that the controllability is poor. While grinding away the processing traces, it is likely to process the surface that should not be processed, which will affect the product quality.

Method used

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  • Controllable precision finishing process for surface of high-speed tool constraint abrasive part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Influence of parameters of abrasive particle type

[0028] Abrasive mixture: choose three kinds of polishing paste 80#+oil, polishing paste 240#+oil and polishing paste 320#+oil;

[0029] Working state: parts and tools are buried in a mixture of abrasive polishing paste and oil;

[0030] Working material: Q345;

[0031] Tool: Φ6 carbide rod;

[0032] Cutting method: straight line;

[0033] Cutting amount: 600 (mm / min);

[0034] Spindle speed: 19200 (r / min);

[0035] Gap between part and tool: 0.05 (mm);

[0036] According to the experimental data, if the polishing paste 80#+oil is selected, the surface of the parts after finishing is slightly rough; from the experimental data, if the polishing paste 240#+oil is selected, the surface of the parts after finishing is relatively smooth, and the effect is better ; From the experimental data, the polishing paste 320#+oil is selected, and there are slight scratches on the surface of the parts after finishing. ...

Embodiment 2

[0038] Example 2: Influence of Constrained Abrasive Finishing Tool Feed Parameters

[0039] Abrasive mixture: polishing paste 80#+oil;

[0040] Working state: parts and tools are buried in a mixture of abrasive polishing paste and oil;

[0041] Working material: Q345;

[0042] Tool: Φ6 carbide rod;

[0043] Cutting method: straight line;

[0044] Experimental quantitative parameters:

[0045] Spindle speed: 19200 (r / min), gap between parts and tools: 0.05 (mm);

[0046] Experimental variable parameters:

[0047] Cutting amount: choose 50mm / min, 100mm / min, 400mm / min, 600mm / min, 1000mm / min;

[0048] According to the experimental data: the cutting amount is 50mm / min, and there are slight scratches on the surface of the parts; the cutting amount is 100mm / min, and there are slight scratches on the surface of the parts; It is rough; the cutting rate is 600mm / min, and the surface of the part has scratches, which is slightly rough; the cutting rate is 1000mm / min, and the surfac...

Embodiment 3

[0050] Example 3: Influence of parameters on spacing between part and cemented carbide rod

[0051] Abrasive mixture: polishing paste 80#+oil;

[0052] Working state: parts and tools are buried in a mixture of abrasive polishing paste and oil;

[0053] Working material: Q345;

[0054] Tool: Φ6 carbide rod;

[0055] Cutting method: straight line;

[0056] Experimental quantitative parameters:

[0057] Spindle speed: 19200 (r / min), tool feed: 600mm / min;

[0058] Experimental variable parameters:

[0059] The distance between the part and the cemented carbide rod: select 0.05mm, 0.1mm, 0.15mm, greater than 2mm;

[0060] From the experimental data: when the spacing is 0.05mm, there are finishing marks on the surface of the parts; when the spacing is 0.1mm, there are micro scratches on the surface of the parts; when the spacing is 0.15mm, there are scratches on the surface of the parts, which is inferior to the effect of a spacing of 0.1mm; If the spacing is greater than 2mm, ...

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Abstract

The invention relates to the field of material surface machining, in particular to a controllable precision finishing process for the surface of a high-speed tool constraint abrasive part. The process comprises the following steps of: (1) performing pre-machining, engraving and milling on the part in a machine tool machining center, and changing a cutter for machining the part into a hard alloy bar of the same diameter; (2) fixing the hard alloy bar on the machine tool machining center, wherein the hard alloy bar is placed in parallel to the surface of the part, and a clearance is reserved between the hard alloy bar and the surface of the part; starting a motor, so that the hard alloy bar rotates at a high speed; and (3) pouring an abrasive mixed solution, soaking the part and the hard alloy bar into the abrasive mixed solution, and performing micro removal machining on the surface of the part through the abrasive mixed solution by high-speed rotation of the hard alloy bar. By the process, the defect layer on the surface of the part is eliminated, excessive plastic deformation of the surface of the machined part is removed, and the roughness of the surface of the part meets the requirement.

Description

technical field [0001] The invention relates to the field of material surface machining, in particular to a controllable precision finishing process for the surface of engraving and milling parts. Background technique [0002] Complex shapes such as engine blades, impellers, and molds, and the machining accuracy and surface quality of structural parts have a great impact on their performance. [0003] At present, the wide application of CNC machine tools and machining centers makes the size and shape accuracy of the above-mentioned parts must be guaranteed. On the other hand, there will inevitably be machining marks on the surface of the parts after cutting. Measures need to be taken to reduce or even eliminate these Process traces, improve surface quality. [0004] Traditional material surface finishing methods include: (1), manual grinding, which is time-consuming and laborious, and it is difficult to fundamentally improve the quality of the product; (2), vibration finish...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/14B24B19/20
Inventor 安鲁陵庄曙东王婷婷
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS