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Variable-spiral unequal-pitch end mill with surface microtexture

A technology of micro-texture and end mills, which is applied in the field of tooth pitch end mills, can solve the problems affecting the surface quality of workpieces that affect the machining accuracy, reduce the service life of tools, and vibration of the milling system, so as to improve processing stability and reduce milling. Heat, the effect of enhancing processing efficiency

Pending Publication Date: 2022-05-27
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the milling process, it is easy to stimulate the vibration of the milling system, which seriously affects the machining accuracy and surface quality of the workpiece, aggravates tool wear, and reduces the service life of the tool

Method used

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  • Variable-spiral unequal-pitch end mill with surface microtexture
  • Variable-spiral unequal-pitch end mill with surface microtexture
  • Variable-spiral unequal-pitch end mill with surface microtexture

Examples

Experimental program
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Embodiment 1

[0023] reference Figure 1-Figure 4 , a variable spiral unequal pitch end milling cutter with surface microwoven, including a shank (1) and a milling head (2), milling bit (2) with four perimeter milling edges (3) and four bottom milling edges (4), a spiral chip groove (5) and a crescent groove (6) between the perimeter cutter (3) and a bottom milling edge (4), a multi-row circular microwoven with a fan arrangement on the end face of the milling cutter (7), and multiple cooling channels (8) inside the milling cutter.

[0024] reference Figure 1 The circumferential milling edge (3) of the end mill adopts a variable spiral structure, and the square sum of the spectral amplitude deviation of the milling force is used as the target function for global optimization, and the optimization result is the β of the first tooth helix angle 1 and the third tooth helix angle β 3 40°, the second tooth helix angle β 2 and the fourth tooth helix angle β 4 It is 41° and has a spiral chip evacuation ...

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Abstract

According to the technical scheme, the variable-spiral unequal-tooth-pitch end milling cutter is characterized in that the variable-spiral unequal-tooth-pitch end milling cutter comprises a cutter handle part and a milling cutter head, a plurality of milling blades are arranged on the milling cutter head and comprise four circumferential milling blades and four bottom milling blades, the circumferential milling blades on the cylindrical surface of the milling cutter are of a variable-spiral structure, and the bottom milling blades on the cylindrical surface of the milling cutter are of a variable-spiral structure. A variable-pitch structure is adopted between every two adjacent bottom milling blades, chip grooves are formed between the milling blades, and a plurality of rows of circular microtextures arranged in a fan shape are arranged on the end face of the end mill. A plurality of cooling channels are arranged in the milling cutter, the upper ends of the cooling channels are communicated with the liquid inlet hole, an outlet communicated with the cooling channels is arranged at the bottom of the milling cutter head, and a filter screen is fixedly arranged in the outlet. According to the invention, the vibration of the cutter in the milling process can be effectively reduced, the lubricating effect of the cooling liquid is enhanced, the friction between the cutter and a workpiece is reduced, the milling force in the machining process is reduced, granular impurities generated in the machining process are prevented from blocking the cooling holes, and the service life of the cutter is prolonged.

Description

Technical field [0001] The present invention relates to the field of milling machining tool design, specifically to a variable spiral unequal pitch end milling cutter with surface microwoven structure. Background [0002] Milling is one of the main processing and manufacturing methods of material removal, and is widely used in the processing of various complex surfaces and metal parts. For conventional standard end mills, the tooth spacing between the teeth is equal, the helix angle is the same, the amount of milling is the same, and the milling can be highly concentrated. Therefore, in the milling process, it is easy to stimulate the vibration of the milling system, which seriously affects the machining accuracy and surface quality of the workpiece, aggravates the wear of the tool, and reduces the service life of the tool. Variable helix unequal pitch milling cutters are a cost-effective way to reduce milling vibrations. For variable spiral unequal pitch milling cutter, the mill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C5/10B23C5/28
CPCB23C5/10B23C5/28Y02P70/10
Inventor 张为司博文
Owner HARBIN UNIV OF SCI & TECH
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