Vibrated grinding process method for materials difficult to machine

A processing method and difficult-to-process technology, which is applied in the field of oscillating grinding of difficult-to-machine materials, can solve the problems of low grinding efficiency, negative effects, and poor grinding economy, so as to achieve improved grinding wheel life, high surface integrity, and avoid Effect of Grinding Burn

Inactive Publication Date: 2018-11-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this will easily lead to low grinding efficiency and poor grinding economy,

Method used

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  • Vibrated grinding process method for materials difficult to machine
  • Vibrated grinding process method for materials difficult to machine
  • Vibrated grinding process method for materials difficult to machine

Examples

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Embodiment 1

[0028] A method for oscillating grinding of difficult-to-machine materials, the specific steps are as follows:

[0029] Step 1: Determine the process parameters of slow-feed deep-cut grinding

[0030] The selected workpiece material is nickel-based superalloy GH4169, the coolant is water-based emulsion, the grinding wheel is corundum grinding wheel, the diameter of the grinding wheel is 400mm, and the grinding machine is a high-speed CNC grinding machine. The grinding test site is as follows: figure 1 shown. The test process includes:

[0031] (1) Clean the workpiece;

[0032] (2) Clamping: the nickel-based high-temperature alloy workpiece is clamped on the CNC grinding machine workbench by a clamp;

[0033] (3) Dressing of the grinding wheel: the surface of the corundum grinding wheel is trimmed with a single-grain diamond dressing pen. The trimming amount is 0.2mm.

[0034] A set of process parameters for the slow-feed grinding burn of nickel-based superalloys are selec...

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Abstract

The invention relates to a vibrated grinding process method for materials difficult to machine. The method specifically includes the steps of (1) determining the demanded movement distance of a grinding heat source as specific grinding length when critical burn grinding temperature is achieved or almost achieved during grinding; (2) using a slow-insertion deep-cutting grinding process for grindingwithin the range of the specific grinding length; (3) within the range of the specific grinding length, adopting a fast reciprocating grinding process for making a grinding wheel carry out grinding motion back and forth, adopting the slow-insertion deep-cutting grinding process again for grinding within the range of the specific grinding length when the grinding wheel comes back to an unmachinedsurface, and repeating the steps above to form a vibrated grinding process, wherein the adopted grinding depth of the fast reciprocating grinding process is equal to that of the slow-insertion deep-cutting grinding process. According to the grinding method, on the premise of ensuring the grinding efficiency, the quality of ground surfaces is significantly improved, and the method can be applied toefficient grinding of nickel-based superalloys, titanium alloys and other materials difficult to machine.

Description

technical field [0001] The invention relates to a method for oscillating grinding of difficult-to-machine materials, in particular to a method for significantly improving the grinding surface quality of difficult-to-machine materials such as nickel-based superalloys and titanium alloys on the basis of ensuring grinding efficiency, which belongs to machinery processing field. Background technique [0002] Materials such as nickel-based superalloys and titanium alloys are widely used in the manufacture of aero-engines, such as compressor chambers, combustion chambers, and turbine blades, due to their excellent high-temperature strength, high thermal stability, creep resistance, fatigue resistance, and corrosion resistance. , Turbine disk and other parts. However, the excellent material properties have brought many difficulties to machining, resulting in nickel-based superalloys and titanium alloys becoming typical difficult-to-machine materials. Grinding is one of the main ma...

Claims

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Application Information

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IPC IPC(8): B24B1/04
CPCB24B1/04
Inventor 丁文锋苗情徐九华傅玉灿苏宏华杨长勇陈燕张全利
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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