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Axial flow and mixed flow fan blade size accurate control method

A mixed-flow fan and precise control technology, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of reducing the quality of the fan and increasing the production cycle, and achieve the effects of reducing the processing cycle, preventing deformation, and enhancing toughness and strength

Pending Publication Date: 2021-08-10
NANTONG DART POLLRICH FAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above situation increases the production cycle and reduces the quality of the fan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The present invention provides the following technical solutions: a method for accurately controlling the blade size of axial flow and mixed flow fans, comprising the following steps:

[0027] A. First make the blade forming mold, and polish the formed mold;

[0028] B. Precisely stake out the blades after they are unloaded and unfolded, and reserve a molding allowance and a gap at the end of the expanded diagram after unfolding;

[0029] C. Fix the blade forming mold;

[0030] D. Cut the blade according to the size, and check the cut size;

[0031] E. Use a bending machine to bend the cut blade according to the sample drawing;

[0032] F. Put the bent blade on the center line of the lower mold of the blade forming mold to form a blade;

[0033] G. Heat-treating the shaped blades to obtain finished blades.

[0034] In this embodiment, in step A, the blade forming mold is first roughly ground and then finely ground, and then the polished blade forming mold is cleaned...

Embodiment 2

[0045] A method for accurately controlling the blade size of an axial flow and mixed flow fan, comprising the following steps:

[0046] A. First make the blade forming mold, and polish the formed mold;

[0047] B. Precisely stake out the blades after they are unloaded and unfolded, and reserve a molding allowance and a gap at the end of the expanded diagram after unfolding;

[0048] C. Fix the blade forming mold;

[0049] D. Cut the blade according to the size, and check the cut size;

[0050] E. Use a bending machine to bend the cut blade according to the sample drawing;

[0051] F. Put the bent blade on the center line of the lower mold of the blade forming mold to form a blade;

[0052] G. Heat-treating the shaped blades to obtain finished blades.

[0053] In this embodiment, in step A, the blade forming mold is first roughly ground and then finely ground, and then the polished blade forming mold is cleaned and dried.

[0054] In this embodiment, in step D, check the h...

Embodiment 3

[0064] A method for accurately controlling the blade size of an axial flow and mixed flow fan, comprising the following steps:

[0065] A. First make the blade forming mold, and polish the formed mold;

[0066] B. Precisely stake out the blades after they are unloaded and unfolded, and reserve a molding allowance and a gap at the end of the expanded diagram after unfolding;

[0067] C. Fix the blade forming mold;

[0068] D. Cut the blade according to the size, and check the cut size;

[0069] E. Use a bending machine to bend the cut blade according to the sample drawing;

[0070] F. Put the bent blade on the center line of the lower mold of the blade forming mold to form a blade;

[0071] G. Heat-treating the shaped blades to obtain finished blades.

[0072] In this embodiment, in step A, the blade forming mold is first roughly ground and then finely ground, and then the polished blade forming mold is cleaned and dried.

[0073] In this embodiment, in step D, check the hei...

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Abstract

The invention discloses an axial flow and mixed flow fan blade size accurate control method. The axial flow and mixed flow fan blade size accurate control method comprises the following steps that A, firstly, a blade forming mold is manufactured, and the formed mold is polished; B, a blade is blanked and unfolded, then precise lofting is carried out, and a profiling allowance and a notch are reserved in the end of an unfolded drawing after unfolding; C, the blade forming mold is fixed; D, the blade is cut according to the size, and the cut size is checked; E, the cut blade is bent by using a bending machine according to the sample drawing; F, the bent blade is placed at the center line position of a lower mold of the blade formed mold to be pressed to form the blade; and G, the formed blade is subjected to heat treatment, and a blade finished product is obtained. According to the manufacturing method, the blade size can be accurately controlled; and meanwhile, the toughness and strength of the size can be enhanced, and the machining quality of the axial flow and mixed flow fan blade is improved.

Description

technical field [0001] The invention relates to the technical field of fan blade processing, in particular to a method for precisely controlling the size of axial flow and mixed flow fan blades. Background technique [0002] The fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine; the fan is the key to the transmission and distribution energy consumption of the system, which is a very critical part of building energy conservation. According to the inspection of fans by the National Air Conditioning Equipment Quality Supervision and Inspection Center for many years, many fans have problems under rated working conditions, so it is necessary to produce and manufacture fans in strict accordance with product standards. Fans are mainly used in metallurgy, petrochemical, electric power, urban rail transit, textile, shipbuilding and other fields of national economy and ventilation in various pla...

Claims

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Application Information

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IPC IPC(8): B21D35/00B21D53/78C21D9/00C21D1/26C21D1/18
CPCB21D35/002B21D53/78C21D1/18C21D1/26C21D9/0068
Inventor 胡小文陈良良郭朋华
Owner NANTONG DART POLLRICH FAN
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