Cylindrical turning-burring integrated tool and method thereof
A technology for cylindrical turning and deburring knives, applied in the field of metal cutting tools, can solve problems such as tool failure, groove wear, micro-block breaking, etc., and achieve the effect of improving surface quality and tool life
Inactive Publication Date: 2012-07-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
After a large number of impact cycles on the surface of the tool, micro-cracks appear, followed by micro-block breakage, and finally accumulate into a large range of groove wear, resulting in tool failure
Method used
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[0018] Such as figure 2 and image 3 As shown, the present invention consists of a cutting blade 1, a cutting head 2, a handle 3, a deburring head 8, a deburring blade 9, a dovetail guide rail 10, a precision screw 4, a bolt seat 5, a spring 6, a scale line 7, etc. composition.
[0019] Such as Figure 6 As shown, the blade 1 is a cutting blade 1, and the blade 2 is a deburring blade 9, and the vertical distance between the two base surfaces is L. When the radius of the workpiece is R1, the elongation of the deburring blade 9 is:
[0020] AE = R 1 - R 1 2 - L 2
[0021] At this time, the cutting edge of the cutting blade 1 and the cutting edge of the deburring blade 9 are just on the arc with the workpiece axis as the center and the turning radius as the radius. The main cu...
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The invention relates to a cylindrical turning-burring integrated tool and a method thereof, belonging to the field of machining. The cylindrical turning-burring integrated tool is characterized in that a burring tool bit (8) is matched and installed on the lower part of a cutting tool bit through a dovetail groove (10), and provided with a burring blade (9); and a bolt seat (5) is arranged below a tool holder and connected with the tail of the burring tool bit through a spring (6), and the front end of a precise screw (4) spinning inside the bolt seat (5) is propped at the tail of the burring tool bit. Before turning an excircle, the elongation of the burring blade (9) relative to a cutting blade (1) is adjusted to enable the tool nose of the cutting blade (1) and the tool nose of the burring blade (9) to be on an arc which takes an axis of a workpiece as a center of acircle and takes a turning radius as a radius; meanwhile, the main cutting edge of the cutting blade and the main cutting edge of the burring blade (9) are in coincidence with a bus of a surface to be processed; and after the cutting blade (1) cuts off the workpiece, the burr on the surface to be processed is just scraped by the burring blade (9).
Description
field of invention [0001] The invention relates to a metal cutting tool used for outer circle turning and having the function of deburring and a method thereof, belonging to the field of mechanical processing. Background technique [0002] As the machinery manufacturing industry moves towards high precision, high efficiency and automation, the requirements for machining precision are getting higher and higher. This makes the traditional understanding that the impact of burrs can be ignored when the processing accuracy is not too high has been challenged. The results of statistical analysis of the processing man-hours of most processed workpieces show that the man-hours used in the deburring process account for about 5%-10% of the total processing man-hours of the workpieces. Since 1973, the United States has spent about $6 billion a year on deburring. [0003] Cutting burrs usually directly affect the quality of the machined surface. When cutting some difficult-to-machine...
Claims
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IPC IPC(8): B23B27/00B23B5/00
Inventor 李亮何宁肖茂华卞荣张建危卫华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS