Method for machining circular hole welding groove on surface of cylindrical shell plate in metal cutting mode
Through the three-axis linkage machining method, the intersecting lines are processed according to the layer, and the problems of high hardware configuration requirements and increased costs caused by the five-axis linkage machining function and the length of the cylindrical rod milling cutter in the prior art are solved, and efficient and low-cost round hole welding bevel processing is achieved.
Patent Information
- Application Number
- CN202311609138.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-29
- Publication Date
- 2025-05-06
AI Technical Summary
In the prior art, processing round hole welding bevel requires five-axis linkage machining function, and the length of the cylindrical rod milling cutter is relatively long, and the machine tool spindle movement space is large, resulting in high hardware configuration requirements and increased cost.
Three-axis linkage processing method is adopted to process intersecting lines according to the layer to form welding bevels. By dividing the depth and diameter of the welding bevel into n equal parts, n+1 cylindrical surfaces with different radii and diameters, intersecting to form n+1 intersecting lines.
It reduces the hardware configuration requirements for CNC system, saves processing equipment costs, improves the versatility of CNC machining programs, realizes the automatic generation of rough and fine machining programs, reduces programming time and empty stroke time, and improves processing efficiency.
Smart Images
Figure CN119927290A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to a method for machining a round hole welding groove on a cylindrical shell plate surface by metal cutting, and is suitable for machining a round hole welding groove on a cylindrical shell plate surface by a metal cutting machine tool. Background Art
[0002] The processing of circular hole welding grooves is usually done by metal cutting. The original metal cutting method is to use five-axis linkage processing to mill the cylindrical bar milling cutter along the side generatrix of the welding groove. The problem is that the processing machine tool must have five-axis linkage processing function, the cylindrical bar milling cutter is long, and the machine tool spindle movement space is large. Summary of the invention
[0003] The purpose of the present invention is to solve the problems existing in the five-axis linkage processing method and propose a method for processing the circular hole welding groove by metal cutting on the surface of a cylindrical shell plate. The problem that the processing machine tool must have the five-axis linkage processing function, the cylindrical bar milling cutter is long, and the machine tool spindle movement space is large.
[0004] The technical solution provided by the present invention is: a method for machining a circular hole welding groove on the surface of a cylindrical shell plate by metal cutting, wherein the center line of the circular hole welding groove is arranged along the radial direction of the cylindrical shell plate; the circular hole welding groove is understood as a set of intersecting lines formed by the intersection of multiple cylindrical surfaces with diameters between the diameter of the circular hole and the large end diameter of the welding groove, and cylindrical surfaces with radii between the outer radius of the cylinder and the difference between the outer radius of the cylinder and the depth dimension of the welding groove.
[0005] The three-axis linkage processing method is adopted to process the intersecting lines layer by layer and finally form the welding groove.
[0006] The present invention can divide the depth dimension of the welding groove into n equal parts, where n is a positive integer greater than 1, to form n+1 cylindrical surfaces with different radii; the diameter of the circular hole and the diameter of the large end of the welding groove are also divided into n equal parts to form n+1 cylindrical surfaces with different diameters; each cylindrical surface with different diameters intersects with the corresponding cylindrical surface with different radii to form n+1 intersecting lines. The processing machine tool uses a three-axis linkage processing method to process these n+1 intersecting lines, and the welding groove can be fitted. The surface fitting accuracy depends on the size of n. The larger n is, the higher the surface fitting accuracy is.
[0007] Technical effect of the present invention: The present invention adopts a three-axis linkage processing method to replace the original five-axis linkage processing method, which reduces the hardware configuration requirements for the numerical control system and saves the cost of processing equipment.
[0008] The present invention adopts a method of processing intersecting lines according to layers and finally forming welding grooves, which can improve the versatility of numerical control processing programs. By adjusting the size of n, the automatic generation of rough and fine processing programs can be realized, which reduces programming time and improves processing efficiency.
[0009] The present invention adopts a method of processing the intersecting line by layer and finally forming the welding groove, avoiding the milling processing method of using a cylindrical bar milling cutter along the side generatrix of the welding groove. The curve processing method is used to replace the straight line processing method, which reduces the moving space of the power head, increases the effective processing time, reduces the idle travel time, and improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the circular hole welding groove on the surface of the cylindrical shell plate of the present invention. Implementation
[0011] like Figure 1 As shown, the present invention provides a method for machining a circular hole welding groove by metal cutting on the surface of a cylindrical shell plate, wherein the center line of the circular hole welding groove is arranged along the radial direction of the cylindrical shell plate; the circular hole welding groove is understood as a set of intersecting lines formed by the intersection of a plurality of cylindrical surfaces with diameters between the diameter 1 of the circular hole and the diameter 3 of the large end of the welding groove, and a cylindrical surface with a radius between the radius 2 of the outer circle of the cylinder and the difference between the radius 2 of the outer circle of the cylinder and the depth dimension 4 of the welding groove. Among them, the intersecting line 5 is the intersecting line formed by the intersection of a cylindrical surface with a diameter of 1 and a cylindrical surface with a radius of the difference between the radius 2 and the depth dimension 4 of the welding groove; the intersecting line 6 is the intersecting line formed by the intersection of the large end of the welding groove with a diameter of 3 and the cylindrical surface with a radius of 2. The three-axis linkage processing method is adopted to process the intersecting lines layer by layer, and finally form the welding groove.
[0012] Specifically, the welding groove depth dimension 4 of the present invention is divided into n equal parts (n is a positive integer greater than 1), forming n+1 cylindrical surfaces with different radii; the diameter 1 and the diameter 3 are also divided into n equal parts, forming n+1 cylindrical surfaces with different diameters. Each cylindrical surface with different diameters intersects with the corresponding cylindrical surface with different radius, forming n+1 intersection lines.
[0013] The processing machine tool uses three-axis linkage processing to process these n+1 intersection lines, and then the welding groove can be fitted. The surface fitting accuracy depends on the size of n. The larger n is, the higher the surface fitting accuracy is.
Claims
1. A method for machining a circular hole welding groove on a cylindrical shell plate surface by metal cutting, wherein the center line of the circular hole welding groove is arranged along the radial direction of the cylindrical shell plate; characterized in that: The circular hole welding groove is understood as a set of intersecting lines formed by the intersection of multiple cylindrical surfaces with diameters between the circular hole diameter and the large end diameter of the welding groove, and cylindrical surfaces with radii between the outer radius of the cylinder and the difference between the outer radius of the cylinder and the depth of the welding groove. The three-axis linkage processing method is used to process each intersecting line layer by layer to finally form a circular hole welding groove.
2. The method for machining a circular hole welding groove by metal cutting on a cylindrical shell plate surface according to claim 1, characterized in that: The depth dimension of the welding groove is divided into n equal parts, where n is a positive integer greater than 1, to form n+1 cylindrical surfaces with different radii; the diameter of the circular hole and the large end diameter of the welding groove are also divided into n equal parts to form n+1 cylindrical surfaces with different diameters; each cylindrical surface with different diameters intersects with the corresponding cylindrical surface with different radii to form n+1 intersecting lines.