Cavity machining track planning method based on numerical control operation system

A technology of trajectory planning and operating system, applied in general control system, control/adjustment system, program control, etc., can solve the problems of inconsistent surface quality and roughness of groove cavity machining, and ensure the machining surface quality, high efficiency and flexibility. processing effect

Active Publication Date: 2013-03-27
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of inconsistent processing surface quality and roughness of the groove and cavity in the processing of the groove by the existing processing method, the present invention further provides a method for planning the groove processing trajectory based on the numerical control operating system; the method can be It is an efficient and flexible method for planning groove machining trajectory by directly machining the rounded groove on the opposite side of the CNC operating system.

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  • Cavity machining track planning method based on numerical control operation system
  • Cavity machining track planning method based on numerical control operation system
  • Cavity machining track planning method based on numerical control operation system

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specific Embodiment approach 1

[0031] Specific implementation mode one: as Figure 1-10 As shown, the groove machining trajectory planning method based on the numerical control operating system described in this embodiment is implemented according to the following steps:

[0032] Step A, based on the longitudinal section depth direction boundary trajectory of the groove on the drawing is the combination line segment of the longitudinal section diagram composed of straight lines and arcs, the number of times n of the machining trajectory in the depth direction of the tool (parameter R in the program) 7 ) as a set condition variable to plan a set of evenly arranged point sets projected on the combined line segment of the longitudinal profile, and the distance between every two adjacent points is the step of the distance between two adjacent trajectories projected on the combined line segment of the longitudinal profile The long value M, and then control the uniform arrangement of the projected spacing of the ...

specific Embodiment approach 2

[0058] Specific implementation mode two: see image 3 The groove machining trajectory planning method based on the numerical control operating system described in this embodiment also includes step B: calculating the groove side fixed cutting edge (1 ), the compensation value of the tool setting point (O) of the groove fillet surface dynamic cutting edge (2) and the tool, describes the track of the tool setting point; The fillet radius R. Other steps are the same as in the first embodiment.

[0059] Tool selection: Because the side wall of the groove is straight and the rounded bottom is a rounded surface, it is more suitable for us to choose a rounded end mill, which can not only improve the processing efficiency of the side wall, but also meet the surface quality of the rounded surface , so that we can describe the trajectory of the tool cutting point 1 and 2 relative to the workpiece zero point G54 according to the incremental method (such as the schematic diagram of the ...

specific Embodiment approach 3

[0060] Specific implementation mode three: as Figure 1-5 and Figure 6 As shown, this embodiment is a specific process of programming using the method of the present invention:

[0061] Step 1. The trajectory of the edge-rounded groove is evenly arranged and planned:

[0062] Based on the known dimensions of the groove profile on the drawing (see Figure 4 ) Considering that the longitudinal section boundary trajectory of the groove is a combination curve of a straight line and a circular arc process, through a series of calculation methods, according to the number of machining trajectories n of the tool in the depth direction (the parameter R in the program 7 ) setting to plan a group of uniformly arranged point sets projected on the combined line of the longitudinal section, and then control the uniform arrangement of the projected spacing of the tool layer cutting trajectory on the inner surface of the groove (see Figure 6 ).

[0063] Step 2. Calculate the compensatio...

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Abstract

The invention discloses a cavity machining track planning method based on a numerical control operation system, relates to a cavity machining track planning method, and aims to solve the problem of surface quality and roughness inconsistence in machining a diccavity of the cavity by using the traditional machining method. The cavity machining track planning method based on the numerical control operation system has the key technical points as follows: a machining track number of times n is used as a set condition variable, a track distance step value can be changed through changing the machining track number of times n by only deducing an overall length formula of combined line segments; the overall length of the combined line segments is equal to the sum of the length of a straight line segment and an arc segment, a step value of a projection of a track distance on the combined line segments can be solved through dividing a set track number by the overall length of the combined line segments, the projection distance of the track distance on the straight line segment part is the solved step value, and the distance projection between two tracks at a combined part of the straight line segment and the arc segment in the combined line segments is composed of a small segment of straight line segment and a small segment of arc segment together, so that a length formula of the small segment of straight line segment and the small segment of arc segment is deduced. By using the method provided by the invention, the precision for precision machining of the slotting of an edge-chamfering cavity is consistent.

Description

technical field [0001] The invention relates to a method for planning groove processing tracks, in particular to a method for planning the processing track of groove side walls and bottom edge fillets under a numerically controlled operating system. Background technique [0002] In the past, the groove edge of the part was rounded to form a rounded surface. In the three-axis machining process, a convex semicircular milling cutter (or ball cutter) that was consistent with the radius of the rounded surface was usually used. With the rapid development of mold and other processing fields and CNC technology, it is now common It is to use PROE, UG and other software to draw graphic modeling and use the CAM function of these software to post-process the graphic modeling to automatically generate a program, and input the program into the machine tool to complete the processing. However, due to the limitations of the software processing environment, for three-axis cavity milling, onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/402
Inventor 高岩杨东波孙智勇王龙梅宋兵史云鹏乔义明李强王治军王时光
Owner HARBIN TURBINE
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