A kind of high-order tangential enveloping grinding and polishing processing method and its application

A processing method and grinding and polishing technology, which is applied in metal processing equipment, grinding/polishing equipment, grinding machines, etc., can solve the problem of high frequency of grinding and polishing force measurement and feedback changes, relatively high requirements for the control system of grinding and polishing devices, and workpiece grinding and polishing. Poor surface smoothness and other problems, to achieve the effect of good surface accuracy and surface consistency, ensure accuracy and precision, and high processing precision

Active Publication Date: 2020-07-10
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are following deficiencies in the line contact polishing and polishing processing method in the prior art: (1) Although various methods are adopted in the prior art to improve the performance of the contact wheel grinding and polishing, the nature of its line contact determines its poor processing performance, The processing accuracy and efficiency are relatively low; (2) The contact wheel grinding and polishing is in line contact with the workpiece, the measurement and feedback of the grinding and polishing force have a high frequency of change, and the requirements for the control system of the grinding and polishing device are relatively high. smoothness is relatively poor

Method used

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  • A kind of high-order tangential enveloping grinding and polishing processing method and its application
  • A kind of high-order tangential enveloping grinding and polishing processing method and its application
  • A kind of high-order tangential enveloping grinding and polishing processing method and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] (1) Identify the convex surface on the surface of the workpiece, and after dividing the convex surface, select a fan-shaped cylinder (S S,i ).

[0108] (2) Obtain information such as the envelope angle, radius, and length of the bus bar of the fan-shaped cylinder, adjust the workpiece pose, adjust a fan-shaped cylinder in the workpiece to the corresponding processing posture of the fan-shaped cylinder, and make the abrasive belt and The fan-shaped cylinder contact surface is tangent;

[0109] (3) The manipulator clamps the workpiece and keeps the processing posture corresponding to the fan-shaped cylinder and continues to move forward until the two guide wheels for tensioning the abrasive belt and the fan-shaped cylinder meet the following positional relationship, forming a desired envelope, as Figure 9 Shown:

[0110]

[0111] (4) During the entire grinding and polishing process, according to the set expectation, the abrasive belt is tensioned or relaxed to ensur...

Embodiment 2

[0118] (1) Identify the convex surface on the surface of the workpiece, and after dividing the convex surface, select a fan-shaped cylinder (S S,i ).

[0119] (2) Obtain information such as the envelope angle, radius, and length of the bus bar of the fan-shaped cylinder, and adjust the workpiece pose so that the angle bisector of the envelope angle coincides with the perpendicular line of the line connecting the centers of the two guide wheels, such as Figure 10 shown.

[0120] (3) The workpiece is fed along the perpendicular line connecting the centers of the two guide wheels to form a desired envelope.

[0121] (4) During the entire grinding and polishing process, according to the set expectation, the abrasive belt is tensioned or relaxed to ensure that the normal positive pressure of the abrasive belt-coated area remains within a relatively stable range.

[0122] (5) According to the set expected value, adjust the linear speed of the abrasive belt to keep it within a rel...

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Abstract

The invention belongs to the technical field of intelligent grinding and polishing manufacturing, in particular to a high-order cutting contact enveloping grinding and polishing method and applicationthereof. The method comprises the steps of 1, identifying curve faces of a workpiece and selecting a convex curved face area; 2, dividing the convex curved face area to obtain multiple sector cylinders and the machining poses, the enveloping angles [alpha] and the grinding and polishing quantities of the sector cylinders; 3, enabling one of the sector cylinders to make contact with a sanding belt, and adjusting the corresponding machining pose of the sector cylinder to make the angle of enveloping segmental arc between the workpiece and the sanding belt be equal to the enveloping angle [alpha]; 4, measuring the contact force of the sanding belt and the sector cylinders in real time until the removal amount of the sector cylinder is equal to the grinding and polishing quantity; and 5, repeating the step 3 and the step 4 until each sector cylinder is adjusted in the same way to complete the grinding and polishing of the workpiece. According to the method and the application thereof, theworkpiece is ground and polished in high-order cutting contact enveloping manner, and the machining is high in precision, good in quality, and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of intelligent grinding and polishing, and more specifically relates to a high-order tangential contact enveloping grinding and polishing method and its application. Background technique [0002] With the development of science and technology, complex surfaces are widely used in aerospace, automobile, ship and other fields. These surfaces cannot be composed of elementary analytical surfaces, and it is difficult to obtain accurate analytical solutions for free complex surfaces. Therefore, the finishing of complex surfaces is a manufacturing problem that needs to be solved urgently. [0003] like figure 2 As shown, the first-order contact has a common tangent plane; the second-order contact has the same curvature; the third-order contact has the same curvature and curvature derivative. In the field of grinding processing, there is no contact order. Evaluation criteria Research on the planning of the tool pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B21/00B24B21/16B24B41/00B24B51/00B24B49/16
CPCB24B21/006B24B21/16B24B41/007B24B49/165B24B51/00
Inventor 赵欢姜宗民丁汉
Owner HUAZHONG UNIV OF SCI & TECH
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