Micro-arc edge diamond cutter micro-notch control method based on mechanical grinding method
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A diamond tool and mechanical grinding technology, which is used in the control of workpiece feed movement, grinding machine parts, manufacturing tools, etc. The sharp edge affects the processing quality and other problems, so as to achieve the effect of high tool quality and high efficiency
Active Publication Date: 2020-02-07
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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[0011] 3) The micro-arc tool has extremely high requirements on the edge waviness and roughness. After rework, the contour accuracy and surface roughness of the tool tip directly affect the processing quality. The grinding accuracy must be strictly controlled, and it is difficult to achieve precise control.
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Embodiment 1
[0039] This embodiment provides a method for controlling the micro-opening of the micro-arc edge diamond tool based on the mechanical grinding method. For the micro-arc edge diamond tool, the operation steps are as follows:
[0040] Step 1. Preliminarily judge the quality of the tool after use, determine the position and size of the edge of the tool, and estimate the removal amount of the tool for repair.
[0041] Step 2. Grinding the flank of the tool, removing the slight gaps on the flank of the tool, and controlling the size of the arc of the tool at the same time. The specific operations are:
[0042] Step 2-1, set the grinding pressure to keep constant, and determine the difficult and easy grinding direction and angle according to the removal amount at different angles of the tool arc;
[0043] Step 2-2, according to the size of the slight opening of the flank grinding edge, reserve the height H of the grinding edge, H=R / sinθ, where R is the radius of the tool arc, and θ ...
Embodiment 2
[0050] This embodiment provides a method for controlling the micro-opening of a micro-arc edge diamond tool based on a mechanical grinding method, and the specific steps are as follows:
[0051] Step 1. By observing the micro-arc tool under a high-power optical microscope and an atomic force microscope, the quality of the tool is initially judged, the area and size of the micro-hole are confirmed, and the removal amount of the tool is estimated.
[0052] Step 2, first roughly determine the difficult and easy grinding direction of the tool flank arc. Choose the 800-grain diamond grinding wheel of the knife grinder, install the tool within 1um, 1.0KG constant pressure, speed 3000r / min, reciprocating motion cycle 5 times / min, arc rotation speed 2min / cycle (to ensure that the relationship between volume and angle is recorded Choose slow speed), the grinding direction is parallel to the flank cone surface, inject high-pressure air to keep the tool cooling, and observe the floating ...
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Abstract
The invention discloses a micro-arc edge diamond cutter micro-notch control method based on a mechanical grinding method. The method sequentially comprises the step 1 of determining the position and size of micro-notches of a cutting edge of a cutter; step 2, grinding the rear cutter face of the cutter, removing micro-gaps on the rear cutter face of the cutter, and meanwhile controlling the arc size of the cutter; step 3, roughly grinding the front cutter face of the cutter, and removing micro-notches near the front cutter face and a cutter tip of the cutter; step 4, finely polishing the frontcutter face of the cutter, removing fine micro-notches and defect areas, and controlling the roughness of the front cutter face and the contour of the cutting edge; and step 5, detecting the qualityof the cutter, determining whether the cutting edge of the cutter is damaged, and if so, returning to the step 2; if the micro-notches of the cutting edge of the cutter are reduced, but the micro-notches still exist, performing the step 4 again until the micro-notches of the cutter disappear and the arc size reaches the required value. The phenomena of cracking, micro-notch recurrence and the likecan be effectively avoided, so that the diamond repair efficiency is improved; and the removal amount is reduced, the repeated utilization frequency of the cutter is increased, and the use cost of the cutter is reduced.
Description
technical field [0001] The invention relates to the technical field of ultra-precision cutting, in particular to a micro-cut control method for a micro-arc edge diamond tool based on a mechanical grinding method. Background technique [0002] With the continuous development of manufacturing technology, microstructured surfaces and microfunctional devices are more and more widely used in the fields of optics, aerospace, mechatronics and biomedicine. These tiny structures generally have highly regular and large The aspect ratio will make the component show some excellent performance when used. Typical microstructures include microlens arrays, microgroove structures, pyramid arrays, and the like. [0003] At present, the processing of high-precision microstructures and micro-devices mainly relies on ultra-precision diamond cutting technology. As an important application tool, the manufacturing level of microarc diamond tools directly affects the processing quality of microstr...
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Patent Type & Authority Applications(China)
IPC IPC(8): B24B3/58B24B49/02B24B49/16
CPCB24B3/586B24B49/02B24B49/165
Inventor 张晓峰贾鲁王文升夏志辉
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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