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Copying milling cutter for processing complex cavity

A kind of profiling milling, complicated technology, applied in the direction of milling cutter, manufacturing tools, metal processing equipment, etc., can solve the problems of limited end milling capacity, large undercut, severe tool cutting vibration, etc., to reduce the residual height, reduce the The effect of small undercut and small residual height

Inactive Publication Date: 2014-07-23
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing annular knife has a large amount of undercut when processing a high-hardness complex curved surface, which increases the workload of the subsequent process and the residual height of the surface is high, which causes the cutting vibration of the next process tool to be severe; However, ordinary ball-nose cutters have the problem of zero tip speed, limited end milling capability, and easy chipping of the tip

Method used

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  • Copying milling cutter for processing complex cavity
  • Copying milling cutter for processing complex cavity
  • Copying milling cutter for processing complex cavity

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine Figure 1-Figure 3This embodiment is described. A profiling milling tool for complex cavity processing in this embodiment includes a cutter body 1, one end of the cutter body 1 is provided with a plurality of chip pockets 2, and the plurality of chip pockets 2 are evenly distributed. Open, it is characterized in that: described profiling milling cutter also comprises a plurality of blades 3 with the same structure, each chip pocket 2 is provided with a blade 3 through a screw, and each blade 3 is center symmetrical structure, many The width Dc of the flat bottom between the tip of each blade 3 is 3mm-8mm, and the bottom between the tip of multiple blades 3 forms a hollow flat bottom structure of the cutter.

[0022] The present embodiment is arranged in this way, which can effectively improve the cutting conditions of the end of the tool. The end of the blade in this embodiment has no defect that the cutting speed is 0, and has ...

specific Embodiment approach 2

[0024] Specific implementation mode two: combination figure 1 , Figure 4-Figure 8 To illustrate this embodiment, each of the blades 3 in this embodiment is an indexable blade, and the outer contour shape of the blade 3 is composed of two sections of the same curve connected end to end, and the two curves are symmetrical about the center of the blade. distribution, the curve includes three arcs and a straight edge 3-4 connected in sequence, the three arcs respectively include a side edge 3-1, an arc end edge 3-2 and a rounded edge 3-3, The side edge 3-1, the arc end edge 3-2, the rounded edge 3-3 and the straight edge 3-4 are sequentially tangent, and the arc curvature radius R of the side edge 3-1 is 5mm-25mm, the arc The arc curvature radius rp of the end edge 3-2 is 0.5R, the arc curvature radius r of the rounded edge 3-3 is 2mm-5mm, the main central angle θ of the blade 3 is 30°-90°, and the side edge R The arc length is R*(90-0.5*θ)*π / 180; the secondary central angle δ...

specific Embodiment approach 3

[0028] Specific implementation mode three: combination Figure 5 and Figure 6 Describe this embodiment, the rake angle γ of each blade 3 of this embodiment is 0-9 degree, and relief angle α is 7-12 degree, and the width M of blade 3 is smaller than the radius of curvature of side edge 3-1 by 1-3mm , the blade length L is less than 2R, and the thickness s is in the range of 1.5mm-8mm. Such setting is convenient to meet the requirements of different tool parameters for secondary wasteland processing and semi-finishing processing. , to ensure the strength of the blade; in semi-finishing, the value range of the rake angle γ of the blade is 4-8 degrees, and the value range of the relief angle α is 9-12 degrees, which makes the blade sharp and reduces the cutting force. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

[0029] In this embodiment, the blade width M is 1mm-3mm smaller than the side edge curvature radius R, and the blade len...

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Abstract

The invention discloses a copying milling cutter for processing a complex cavity, relates to copying milling cutters, and is used for solving the problems that the owing cutting quantity is large when the existing annular knife is used for processing a high hardness complex surface, the subsequent handling workload is increased, the surface residue height is high, the cutting and vibration of next process tool are acute and the like, a tool tip speed of a bulb knife is zero, the end-milling capacity is limited, the tool tip is easy to collapse and the like. The copying milling cutter disclosed by the invention comprises a cutter body (1), wherein one end of the cutter body (1) is provided with multiple crumb containing grooves (2); the multiple crumb containing grooves (2) are uniformly arranged. The copying milling cutter also comprises multiple blades (3) with the same structures, wherein each crumb containing groove (2) is internally provided with a blade (3) through a screw; each blade (3) is of a central symmetry structure, the flat base width Dc of the cutter tip of each blade (3) is 3mm-8mm, and the bottom ends of the cutter tips of the multiple blades (3) can form a cutter hollow flat base structure. The copying milling cutter disclosed by the invention is used for secondary rough milling and semi-finishing processes of the complex cavity.

Description

technical field [0001] The invention relates to a profiling milling tool, in particular to a profiling milling tool for complex cavity processing. Background technique [0002] For complex cavity surfaces with a large number of flat surfaces and steep elevations (such as automotive panel molds), the structural features are complex, the material hardness is high, and the removal volume is large. A set of large-scale automotive panel molds is generally processed on a three-axis machine tool, and the number of cutting tools required can reach dozens. The commonly used cutting tools are mostly ring cutters and ball-end cutters. When machining cavity parts, in order to improve the processing efficiency, a large-diameter annular cutter is generally used for rough machining, and then a small-diameter annular knife needs to be used for secondary rough machining based on rough machining to remove the material not removed by the large-diameter annular knife. However, the shape of the...

Claims

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Application Information

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IPC IPC(8): B23C5/02B23C5/20
Inventor 刘献礼张安山李茂月杨树财王广越佟欣郭佳鑫季思慧
Owner HARBIN UNIV OF SCI & TECH
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