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Precision non-circular curved surface track grinding method

A non-circular and curved surface technology, which is applied in the field of grinding, can solve the problems of inability to solve the problem of efficiency tool consumption, inability to meet the needs, inability to solve the problem of part accuracy, etc., to reduce the expenditure of consumables, improve the service life, and have a long service life. Effect

Active Publication Date: 2018-08-17
WUXI MICRO RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of mold life and precision requirements, the current core parts such as punch and concave dies require HRC hardness to reach more than 60, and the accuracy requirements are ±0.003mm. However, heat treatment after CNC machining cannot solve the problem of part accuracy, and CNC hard cutting after heat treatment cannot Solve the problem of inefficiency and tool consumption
The grinding process can solve the processing efficiency and processing accuracy requirements of high-hard materials, but for non-circular surfaces, the traditional grinding method cannot meet the needs

Method used

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  • Precision non-circular curved surface track grinding method
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  • Precision non-circular curved surface track grinding method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 2 As shown in a, it is the overall structure diagram of the part. After analysis, the forming part of the part is processed by three clampings, such as figure 2 b shows the grinding part and the moving track of the grinding wheel after the first clamping process, where S 1 Point is the starting position of processing, E 1 Point is the end position of processing; such as figure 2 c shows the grinding part and the moving track of the grinding wheel after the second clamping process, where S 2 Point is the starting position of processing, E 2 Point is the end position of processing; such as figure 2 d shows the grinding position and the moving track of the grinding wheel after the third clamping process, where S 3 Point is the starting position of processing, E 3 The point is the end position of processing, and the processing of the part is completed. After the processing is completed, the tangent points of the angles and arcs of the part are smooth, and the...

Embodiment 2

[0032] Such as image 3 The part shown in a is the bending punch in the automobile guide rail mold. The length of the part is 530.0mm, the part hardness is required (HRC60-62), the surface roughness is required to be mirrored, and the relevant angles and arc tangent positions are different. Abnormal shape. After analysis, the forming part of the part is processed by two clampings, such as image 3 b shows the grinding part and the moving track of the grinding wheel after the first clamping process, where S 1 Point is the starting position of processing, E 1 Point is the end position of processing; such as image 3 c shows the grinding part and the moving track of the grinding wheel after the second clamping process, where S 2 Point is the starting position of processing, E 2 The point is the end position of processing, and the processing of the part is completed. The forming part of the bending punch is completed by grinding wheel track grinding method. The tangent points of eac...

Embodiment 3

[0034] Such as Figure 4 The part shown in a is the core part of the air conditioner fin mold. The main technical requirements: the shape is symmetrical, the straight side is tangent to the angle, and the distance tolerance between the two straight sides is 0.005mm. The part has high hardness (HRC62-64), and it is difficult to control the shape of the head, especially the straight edge of the part close to the included angle is easy to tilt, and the flatness is difficult to guarantee. Choose a grinding wheel with single V high temperature resin bond. The angle and sharp arc of the grinding wheel should be less than the requirements in the figure. Choose a 30V grinding wheel. The cutting edge of the part is a symmetrical part. Two clampings are required to complete the head. shape. Such as Figure 4 b is the movement trajectory of the single V grinding wheel in one clamping. After the surface is processed, the part is clamped in the opposite direction to complete the head shap...

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Abstract

The invention discloses a precision non-circular curved surface track grinding method. According to the shape of a machined workpiece, a grinding wheel movement track section, a machining starting position point set and a machining stopping position point set are determined in a segmentation manner, and movement track parameters and machining position parameters are programmed and input into grinding equipment; grinding wheel movement tracks corresponding to the machining starting position, the machining stopping position and all machining positions are sequentially read; and a grinding wheelsstarts grinding machining along the movement track section Ln from the machining starting position Sn until grinding machining is completed at the machining stopping position En, and the overall grinding machining is completed. Compared with numerical control milling, accuracy of all items of parts can be guaranteed, the problems about part bending and deformation caused by machining of long andhard parts is avoided, the machining error is within 0.003 mm, the self-control V-shaped grinding wheel can do precision work for a long time and is suitable for high-speed steel track grinding, grinding is sufficient, the service life is long, the product quality, efficiency and yield are improved, the service life is prolonged, the machining cost is saved, and consumable output is reduced.

Description

Technical field [0001] The invention relates to a track grinding method of a precise non-circular curved surface, belonging to the field of grinding processing. Background technique [0002] Grinding technology plays an important role in mold manufacturing. Because of its high precision, long service life and low production cost, it is widely used in molds. With the continuous development of modern industry, mold processing and manufacturing skills must be improved simultaneously. Grinding technology is widely used in the mold processing process. Looking at the grinding level of our country, there are certain deficiencies in cutting-edge grinding technologies such as ultra-precision grinding, profile grinding, track grinding, and CNC unmanned operation, which cannot satisfy the entire high-end Urgent requirements for mold development. At present, the most widely used grinding processes are mainly surface grinding, internal and external cylindrical grinding, and coordinate grind...

Claims

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Application Information

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IPC IPC(8): B24B1/00
CPCB24B1/00
Inventor 卢其欢蒋文红谢凯
Owner WUXI MICRO RES