Ultra-precise deterministic scribing processing system and method for secondary clamping of high-hardness and high-brittleness material

A technology of secondary clamping and processing system, applied in stone processing tools, stone processing equipment, work accessories, etc., can solve the problem of large installation error and the inability of secondary clamping to determine the starting point and end point of the scribing path. and other problems to achieve the effect of reducing requirements and improving experimental efficiency

Active Publication Date: 2021-01-19
HARBIN INST OF TECH
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Problems solved by technology

[0003] In order to solve the problem that the installation error is large and the tool setting position of the starting point and the end point of the marking path cannot be determined by the secondary clamping, the p

Method used

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  • Ultra-precise deterministic scribing processing system and method for secondary clamping of high-hardness and high-brittleness material
  • Ultra-precise deterministic scribing processing system and method for secondary clamping of high-hardness and high-brittleness material
  • Ultra-precise deterministic scribing processing system and method for secondary clamping of high-hardness and high-brittleness material

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specific Embodiment 1

[0045] Firstly, the workpiece 2 is pre-processed on the surface and clamped on the vacuum chuck 1 of the machine tool. During the clamping process, you can choose to stick or mechanically tighten it. The geometric center of the workpiece surface should coincide with the spindle center as much as possible. The tool 4 is installed on the dynamometer. The force signal is collected on the sensor 5, and the sensor 5 is installed on the linear axis of the machine tool.

[0046] Then use the tool setting method to calculate the inclination and inclination direction of the workpiece surface. Such as figure 2 As shown, adjust the tool position so that the tool tip coincides with the center of the spindle, fix the workpiece spindle, position the C-axis position at the zero starting point here, and move the tool so that the tool tip position moves a distance of R in the positive direction of the X-axis. The circle with radius is all contained in the surface of the workpiece, and R shou...

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Abstract

The invention relates to an ultra-precise deterministic scribing processing system and method for secondary clamping of a high-hardness and high-brittleness material. In order to solve the problem that the cutting depth cannot be deterministically controlled in the linear scribing process due to the surface inclination generated by secondary clamping of a workpiece, the invention provides a set ofmethods for workpiece inclination detection, scribing tool setting and tool path planning in two scribing modes. A sampling point on the surface of the workpiece is obtained by matching in-situ detection of a dynamometer and accurate tool setting of a tool nose and the surface of the workpiece, and a workpiece plane equation is fitted by applying a least square method; then, by planning a scribing path, uncontrollable cutting depth factors caused by surface inclination in the cutting process are effectively prevented; and through segmented optimization of the complete path of a cutter, the experiment efficiency and the success rate are greatly improved on the basis of realizing ultra-precise deterministic scribing.

Description

technical field [0001] The invention relates to the technical field of ultra-precision machining, and relates to a system and method for ultra-precision deterministic scribing and machining of high-hard and brittle materials with secondary clamping. Background technique [0002] Functional ceramics with high hardness and brittleness, such as sapphire, quartz glass, magnesia-aluminum spinel and other materials, have important application value and broad application prospects in aviation, military, optics and other fields. However, such materials have special material processing properties that require extensive fundamental experimental research. In the field of ultra-precision machining, the marking of material workpieces is a very important research method: it uses turning tools with different tool parameters or single abrasive scoring heads to cut the surface of hard and brittle materials at micron or even nanometer level In-depth linear cutting experiments, through the de...

Claims

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Application Information

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IPC IPC(8): B28D5/04B28D1/22B28D7/04B28D7/00
CPCB28D5/04B28D5/0058B28D5/0094B28D1/225B28D7/046B28D7/00
Inventor 石卓奇赵清亮郭兵计天宇靳田野
Owner HARBIN INST OF TECH
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