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Tool feed speed control method, device and NC machining terminal

A technology of feed speed and control method, which is applied in the field of tool feed speed control and CNC machining terminal, can solve the problems of different surface finish and reduce the surface quality of curved products.

Active Publication Date: 2021-09-10
江西正皓瑞森精密智能制造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since any two adjacent areas of the curved surface product in different areas have different feed speeds, the surface finish of the border area between the two adjacent areas after processing is different, which greatly reduces the quality of the curved surface product. Surface Quality

Method used

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  • Tool feed speed control method, device and NC machining terminal
  • Tool feed speed control method, device and NC machining terminal
  • Tool feed speed control method, device and NC machining terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] figure 2 A schematic flowchart of a method for controlling the feed speed of a tool provided by the first embodiment of the present invention is shown.

[0058] The tool feed speed control method includes the following steps:

[0059] In step S110, within the set processing area, parallel straight lines are drawn at a predetermined distance on the subsequent processing side according to the straight line corresponding to the tool trajectory, and the intersection points of the parallel straight lines and a predetermined number of sub-areas are determined.

[0060] Wherein, the predetermined number of sub-regions is obtained by dividing the surface area of ​​the product to be processed in advance, in order to make the predetermined number of sub-regions can completely cover the surface area of ​​the product to be processed, such as image 3 As shown, each sub-area includes at least part of the surface area of ​​the product to be processed, and each sub-area is preset wi...

Embodiment 2

[0107] Figure 10 A schematic structural diagram of a tool feed speed control device provided by the second embodiment of the present invention is shown. The tool feed speed control device 400 corresponds to the tool feed speed control method in Embodiment 1, and any optional items in Embodiment 1 are also applicable to this embodiment, and will not be described in detail here.

[0108]The tool feed speed control device 400 includes an intersection point determination module 410 , a judgment module 420 , an auxiliary point setting module 430 and a feed speed determination module 440 .

[0109] The intersection determination module 410 is used to make a parallel straight line at a predetermined distance on the subsequent processing side according to the straight line corresponding to the tool trajectory in the set processing area, and determine the intersection points of the parallel straight line and a predetermined number of sub-areas, wherein the The predetermined number of...

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Abstract

The invention discloses a tool feed speed control method, device and numerical control processing terminal. The method includes: in a set processing area, draw a parallel line at a predetermined distance according to the line corresponding to the tool track, and determine the parallel line and the predetermined distance. The intersection points of the number of sub-areas; respectively judge whether the distance between any two adjacent intersection points reaches the distance threshold; if so, take any intersection point corresponding to the distance as the base point, and set two auxiliary points around the base point on a parallel straight line according to the distance threshold ;Project the auxiliary points on the straight line corresponding to the tool trajectory to obtain the corresponding auxiliary projection points, and determine the feed rate of the speed transition interval between the two auxiliary projection points on the straight line corresponding to the tool trajectory according to the feed speed of the sub-area where the auxiliary projection points are located speed. Under the condition of not changing the hardware cost, the present invention avoids the situation that the smoothness of the product surface caused by using different feeding speeds in different areas of the processed product surface area is avoided, and the product processing quality is improved.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a method and device for controlling the feed speed of a tool, and a numerical control machining terminal. Background technique [0002] In the field of CNC machining, ball cutters are usually selected to process curved surface products. Usually in the processing process, the ball cutter and the product are in the form of point contact, and the material is cut by the high-speed rotation of the ball cutter blade. [0003] Such as figure 1 As shown, Ska is the tool (here is a ball cutter), Prod is the surface product to be processed, the distance from the tangent point G of the tool Ska to the surface product Prod to be processed to the axis OH and the normal vector of the surface product at point G and horizontal plane (will be relative to figure 1 The plane in the horizontal direction is regarded as the horizontal plane) and the angle β is inversely proporti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/416
CPCG05B19/416G05B2219/43001G05B2219/49007
Inventor 李铁骑
Owner 江西正皓瑞森精密智能制造股份有限公司