Grinding head with online electrolytic dressing function

A grinding head and function technology, applied in the direction of manufacturing tools, grinding machine parts, grinding/polishing equipment, etc. Processing requirements and other issues, to achieve the effect of improving grinding conditions, improving continuity and maintaining grinding ability

Active Publication Date: 2019-01-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned electrolysis method plays an important role in improving the effect of electrolytic grinding and maintaining the removal ability of the grinding wheel, but there are still some processing problems that need to be solved. For example, ELID maintains the removal ability of the grinding wheel by removing the grinding wheel bond, but it will also change The shape of the grinding wheel, which in turn affects the surface quality and machining accuracy of the workpiece; the method of cleaning abrasive debris with water jets is not suitable for on-line trimming. Due to the impact of high-pressure water jets, it will have a greater impact on the grinding wheel, causing Grinding system chatter, especially for grinding rods or thin-walled parts with poor rigidity, is likely to cause chatter, which affects machining accuracy and is difficult to meet actual processing needs

Method used

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  • Grinding head with online electrolytic dressing function
  • Grinding head with online electrolytic dressing function
  • Grinding head with online electrolytic dressing function

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as Figure 6 As shown, when grinding the thin-walled stainless steel spherical shell 22 parts at high speed, the sample cutting is first carried out. After several weeks of cutting, there is clogged grinding debris in the grinding wheel 16. The differential head on 13 continuously adjusts the gap between the copper shoe 15 and the grinding wheel 16, and observes the electrolytic removal of grinding debris in the grinding wheel 16, so as to find a better distance between the copper shoe 15 and the grinding wheel 16. After adjusting the distance, carry out Grinding process is carried out according to the predetermined trajectory. During the processing, observe the clogging of grinding debris on the grinding wheel 16. If the clogging of grinding debris increases, the copper shoe 15 has electrolytic removal, corrosion, etc. during processing, and then readjust the copper shoe 15. With the distance between the emery wheel 16, continue processing, after the processing is...

Embodiment 2

[0040] Such as Figure 7 As shown, the difference from Embodiment 1 is that the electrolytic grinding tank device of online electrolytic grinding debris is used to grind the outer spherical surface of the thin-walled stainless steel spherical shell 22 parts, and the described device is fixed on the external machine tool during the grinding process. And it is close to the outer spherical surface of the workpiece and revolves around the center of the sphere to feed. The thin-walled stainless steel spherical shell 22 always rotates around its axis. Combined with the high-speed rotation of the grinding wheel 16, a continuous and dense grinding track is formed on the surface of the workpiece. The revolution of the device The feed can realize the grinding of the entire outer spherical surface. The processing and operation are the same as the internal grinding. First, the sample is cut for trial cutting. After a few weeks of cutting, there is clogged grinding debris in the grinding wh...

Embodiment 3

[0042] Such as Figure 8 As shown, for the non-conductive grinding wheel 16, the electrode 23 with a special structure is designed, the positive pole and the negative pole are distributed alternately, there is an insulating material between the positive pole and the negative pole, and the pulse power is connected to control the change between the positive and negative poles. If there is grinding debris blocking the grinding wheel 16 during processing, when the positive and negative poles are connected through the grinding debris, the grinding debris will be electrolyzed; the removal of the clogged grinding debris will be completed; when the pulse power supply continuously changes the positive and negative poles on the electrode, the entire The clogged grinding debris in the grinding wheel 16 is removed.

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Abstract

The invention discloses a grinding head with an online electrolytic dressing function. The grinding head comprises a motion system, an electrolysis system and a supporting mechanism; the motion systemcomprises a DC brushless motor, a transmission V belt wheel set and a grinding wheel shaft system assembly; the electrolysis system comprises a copper shoe, a copper shoe frame, a fine adjustment mechanism and a fixing frame; and the supporting mechanism comprises a rack support plate, a pressure plate, a connecting screw and a positioning taper pin. According to the grinding head, through the electrolytic action, metal abrasive dust clogging in a grinding wheel is removed, the problem of serious blockage of the grinding wheel when pure metal with large machining plasticity is machined through electrolytic grinding is solved, the grinding condition is improved, the grinding ability of the grinding wheel is kept, the shape and appearance of the grinding wheel cannot be influenced because agrinding wheel material is not removed, and it is further guaranteed that processed products have high processing precision. According to the grinding head, the electrode fine adjustment mechanism isdesigned, a differential ball slide table is adopted for adjusting a gap between the grinding wheel and a copper shoe electrode with high precision, and the best an optimal electrolysis effect is obtained.

Description

technical field [0001] The invention relates to the field of electrolytic grinding in precision and special processing, in particular to a grinding head with the function of on-line electrolytic dressing. Background technique [0002] Due to their unique properties, stainless steel and pure iron are widely used in aerospace, ultra-precision instruments and other fields. In order to meet specific needs, ultra-precision machining is required. Precision turning is the main processing method, and diamond tools cannot be used due to the rapid chemical wear of stainless steel, pure iron and diamond tools. Grinding is a commonly used precision machining method, but stainless steel and pure iron are plastic metals, so the problem of grinding wheel clogging is often encountered during grinding. After the grinding wheel is clogged, the removal ability of the grinding wheel decreases, and the processing quality deteriorates, making it impossible to continue processing. Precision machi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B41/00B24B41/04B24B53/00B24B55/00
CPCB24B41/00B24B41/04B24B53/001B24B55/00
Inventor 康仁科朱祥龙潘延安董志刚郭江刘光宇金洙吉
Owner DALIAN UNIV OF TECH
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