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Rough machining method of integrated three-dimensional flow blade wheel

A ternary flow and integral technology, which is applied in metal processing equipment, manufacturing tools, milling machine equipment details, etc., can solve the problems of low processing efficiency, inability to solve arc chamfering and clearing corners well, and avoid over-cutting , shorten processing time, reduce wear effect

Active Publication Date: 2011-07-20
JIN TONG LING TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has low processing efficiency and cannot solve the problem of arc chamfering and clearing corners well

Method used

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  • Rough machining method of integrated three-dimensional flow blade wheel
  • Rough machining method of integrated three-dimensional flow blade wheel
  • Rough machining method of integrated three-dimensional flow blade wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] First select or make stainless steel integral ternary impeller blanks. Several spherical milling cutters of different specifications are used to mill and remove the material in the flow channel between every two blades. The milling starts from the blade wheel cover side 4 and gradually advances to the blade hub side 5 . as attached figure 2 As shown, the following process steps are included:

[0030] 1) Determine the number of milling layers and the milling depth of each layer according to the change of the flow channel space. As the milling depth changes from shallow to deep, the flow channel space changes from large to small, and the specifications of the spherical milling cutter used gradually change from large to small ;

[0031] 2) A certain layer adopts the largest specification spherical milling cutter allowed to be used in the flow channel space for milling processing, and the ball head radius Ra9 ​​of the milling cutter of a certain layer is set, and after m...

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Abstract

The invention provides a rough machining method of an integrated three-dimensional flow blade wheel. Materials in runners between every two blades are milled and removed by a ball cutter, milling is performed from a blade wheel cover side to a blade hub side gradually, and the specification of the ball cutter is gradually varied from large to small; the milling is performed in a certain layer by the ball cutter of the largest specification which is allowed to be used in the runner space, a ball head radius of the milling cutter of the certain layer is set to be Ra, an arc bevel A is left beside the blade after the milling, and the redundancy of the arc bevel left in the milling process of the certain layer is milled in a mode of rough opening in a full-length direction of the blade; and the processes are repeated, so that a predesigned arc bevel r is finally obtained. Related data and processes can be programmed, and the milling is performed by a numerical control milling machine or anumerical control machining center. A cleaning mode has high efficiency, machining time is shortened by 5 to 20 percent, and the rough machining method is particularly suitable for the rough machining of the large integrated three-dimensional flow blade wheel made of stainless steel, alloy steel and titanium alloy materials.

Description

technical field [0001] The invention relates to the field of integral impeller processing, in particular to a rough machining method for an integral three-dimensional flow impeller made of hard material. Background technique [0002] In the rough machining process of metal impellers, spherical cutters are usually used for milling. In order to improve efficiency, larger diameter cutters are usually used for rough cutting. Due to the influence of the rounded corner of the blade, a certain amount of rough remains. When switching from a large-diameter tool to a small-diameter tool, due to the difference in the radius of the tool, the small-diameter tool cuts at the connection between the blade and the initial cutting layer. The depth is abnormally deepened, especially for hard metal impellers such as large stainless steel, alloy steel, titanium alloy, etc., often the small-diameter cutter will cause chipping damage to the blade as soon as it is cut. [0003] The usual method is...

Claims

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Application Information

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IPC IPC(8): B23C3/18
Inventor 朱华周小康施健兵陈建宾
Owner JIN TONG LING TECH GRP CO LTD
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