CN102658459A

CN102658459A - Manufacturing method of blade for centrifugal aeration blower diffuser and positioning tool for same

Info

Publication number: CN102658459A
Application number: CN2012101552081A
Authority: CN
Inventors: 段昌文; 徐海燕
Original assignee: Chongqing Jiangjin Shipbuilding Industry Co Ltd
Current assignee: Chongqing Jiangjin Shipbuilding Industry Co Ltd
Priority date: 2012-05-18
Filing date: 2012-05-18
Publication date: 2012-09-12
Anticipated expiration: 2032-05-18
Also published as: CN102658459B

Abstract

The invention discloses a manufacturing method of a blade for a centrifugal aeration blower diffuser and a positioning tool for the same. The manufacturing method sequentially comprises the following machining procedures of: 1), roughly milling four sides of the blade and a process lug; 2), carrying out finish milling on the molded line of the blade; 3), adopting the positioning tool, carrying out wire-electrode cutting to remove the process lug; 4), grinding the top surface of the blade; 5), adopting the positioning tool, beneficially turning a positioning shaft by a turning lathe and cutting off the end surface of the process lug; 6), trimming and turning an overlap by a bench worker and milling a knuckle radius between two molded lines at two ends of the blade; 7), mounting a turning tool to drill a threaded bottom hole; 8), tapping and removing burrs by the bench worker; and 9), carrying out comprehensive detection. The manufacturing method and the positioning tool have the advantages that the procedures are arranged reasonably, and the machining quality and the machining efficiency can be effectively improved.

Description

A kind of centrifugal aeration blower diffuser vane manufacturing approach and positioning tool thereof

Technical field

The present invention relates to a kind of air blast diffuser vane manufacturing approach and positioning tool thereof, particularly a kind of centrifugal aeration blower diffuser vane manufacturing approach and positioning tool thereof.

Background technology

At present, the existing centrifugal blower diffuser aeration method of producing a total of eight blade process, in order: 1), and process roughing blade Quartet Da Son; 2), precision milling blade profile; 3), line cutting to craft Da Son; 4), the car tools car positioning axes; 5), locksmith repair burrs and milling turning vane type line between the ends of two transition radius; 6), on the train tools drill pilot hole for tapping; 7) , fitter tapping and deburring; 8), integrated test.

Although the method can be manufactured according to the above centrifugal blower aeration diffuser vanes, but using the above manufacturing centrifugal blower aeration diffuser vanes method has the following disadvantages: 1, step 1) in the process Da promoter in the case of non-parallel Next, using the step 2) to fine milling blade profile, making the blades of profile can not be guaranteed, thus affecting the tooling positioning accuracy.

2, in step 3) used in wire cutting means to craft Da midnight, roughness and parallelism can not guarantee that affect fine car positioning shaft and blade thickness tolerance levels of assurance, causing the blade assembly space beyond.

Summary of the invention

First purpose of the present invention just provides a kind of operation and is provided with rationally, can effectively improve the quality of processing and the centrifugal aeration blower diffuser vane manufacturing approach of blade dimensions.

Second purpose of the present invention just provides a kind of blade that can effectively prevent and adding man-hour, the location work that the depth of parallelism is overproof.

The first object of the present invention, such a technical solution is implemented, a centrifugal blower aeration diffuser blade manufacturing method of processing steps in sequence: 1), and process four roughing blade Da promoter; 2) , precision milling blade profile; 3), using the positioning tooling, wire cutting to craft Da Son; 4), grinding blade top; 5), using the positioning tooling, as well as favorable positioning axis lathe amputated craft Da Son face; 6), fitters repair burrs and milling turning vane type line between the ends of two transition radius; 7) on the train Tools Drill pilot hole for tapping; 8) fitter tapping and deburring; 9), comprehensive test.

Wherein in step 1), the blade is less than Da parallel sub 0.05mm.

Second purpose of the present invention is to realize through such technical scheme: in said operation 3) and operation 5) in positioning tool comprise the cup dolly that has centre bore; Be provided with the body that connects through screw in the cup dolly upper surface; Body is provided with the installation die cavity that communicates with centre bore;, die cavity is provided with the cushion block that is connected with the base upper surface in being installed; The end face of one end of said cushion block and the central lines of centre hole of base; In said installation die cavity, be provided with pressing plate, the molded lines of the left surface of said pressing plate matches with the molded lines of the suction surface of blade, be provided with on the center, lower surface of body and right side screw A and with the corresponding screw B of the right flank of pressing plate.

Owing to adopted technique scheme, the present invention to have following advantage:

1 in the step 1), the roughing blades and four mutually basis Da midnight, the parallelism of the sub-Da control 0.05mm, it is easy to ensure that the blade suction surface finishing and the pressure face of profile line, so ensure that you can accurately calculate the diffuser throat area, so that precise control of outlet pressure;

(2) In step 3), using positioning tooling cutting process Da son, reduced fixture positioning allowed the combination caused the amount of parallelism tolerance;

3 In step 4), the top surface grinding blade, the next process is the positioning tooling as a base, the car cuts off the craft Da son face to ensure that the positioning axis dimension tolerance levels and geometric tolerances to ensure that the assembly clearance;

4. through accurately controlling the positioning reference in each operation, improve the working (machining) efficiency of numerically controlled lathe during finish turning, guaranteed the qualification rate of product.

Description of drawings

Description of drawings of the present invention is following:

Fig. 1 is a diffusion gas blade construction sketch map of the present invention;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is equipped with the positioning tool structural representation of diffusion gas blade in being;

Fig. 4 is the cutaway view of A-A among Fig. 2.

The specific embodiment

Do further detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention, but the present invention is not limited to these embodiments, any on the present embodiment essence spirit improvement or substitute, still belong to claim of the present invention scope required for protection.

Example 1: 1 and 2, a centrifugal blower aeration diffuser blade manufacturing method, the processing steps in sequence: 1), and process roughing blade Quartet Da Son; 2), precision milling blades type line; 3), using the positioning tooling, wire cutting to craft Da Son; 4), grinding the top surface of the blade; 5), using the positioning tooling, as well as favorable positioning axis lathe amputated craft Da Son face; 6), fitter Turning and Milling repair flash across the two blade-type transition radius between the lines; 7) on the train Tools Drill pilot hole for tapping; 8) fitter tapping and deburring; 9), comprehensive test.Wherein in step 1), the blade is less than Da parallel sub 0.05mm.

In the present invention, step 1) and four blades for rough milling basis Da midnight each other, the parallelism of the sub Da controlled less than 0.05mm, so as to ensure finishing blade suction surface 11 of the pressure surface 10 and a line type line contour degrees, but also accurately calculate the throat area of the diffuser, so precise control of outlet pressure; step 3), the use of self-set positioning tooling for the cutting process Da Son, reducing the portfolio caused by inaccurate positioning fixture Parallelism tolerance amount; step 4), the top surface grinding blade, the next process is the positioning tooling as a base, the car cuts off the craft Da son face to ensure that the positioning shaft 12 levels of dimensional tolerances and geometric tolerances to ensure that the assembly space;

Like Fig. 3, shown in 4; In said operation 3) and operation 5) in positioning tool comprise the cup dolly 2 that has centre bore 1; Be provided with the body 3 that connects through screw in cup dolly 2 upper surfaces; Body 3 is provided with the installation die cavity 4 that communicates with centre bore 1; In die cavity 4 is installed, be provided with the cushion block 5 that is connected with base 2 upper surfaces, the central lines of the end face of an end of said cushion block 5 and the centre bore 1 of base 2 is provided with pressing plate 6 in said installation die cavity 4; The molded lines of the left surface of said pressing plate 6 matches with the molded lines of the suction surface of blade 7, be provided with on the center, lower surface of body 3 and right side screw A8 and with the corresponding screw B9 of the right flank of pressing plate 6.

Among the present invention, positioning tool is to use like this: earlier workpiece is put into die cavity is installed, then pressing plate is put into the installation die cavity; The molded lines of the left surface of pressing plate is cooperated with the suction surface of blade; Then, tighten screw A and screw B respectively, make blade 7 and pressing plate 6 fixing getting final product.

Claims

1 A centrifugal blower aeration diffuser blade manufacturing method, the processing steps in sequence: 1), and process roughing blade Quartet Da Son; 2), precision milling blade profile; 3), using the positioning tooling, wire cutting to craft Da Son; 4), grinding blade top; 5), using the positioning tooling, as well as favorable positioning axis lathe amputated craft Da Son face; 6), fitters repair burrs and milling turning vane ends the transition between the two types of wire radius; 7) Tools Drill pilot hole for tapping on the car; 8) fitter tapping and deburring; 9), comprehensive test.

(2) as claimed in claim 1, wherein said centrifugal blower aeration diffuser vane manufacturing method characterized in that: in step 1), the blade parallel sub Da less than 0.05mm.

3. positioning tool that is adopted in the manufacturing approach according to claim 1 or claim 2; It is characterized in that: in said operation 3) and operation 5) in positioning tool comprise the cup dolly (2) that has centre bore (1); Be provided with the body (3) that connects through screw in cup dolly (2) upper surface; Body (3) is provided with the installation die cavity (4) that communicates with centre bore (1);, die cavity (4) is provided with the cushion block (5) that is connected with base (2) upper surface in being installed; The central lines of the centre bore (1) of the end face of one end of said cushion block (5) and base (2); In said installation die cavity (4), be provided with pressing plate (6), the molded lines of the left surface of said pressing plate (6) matches with the molded lines of the suction surface of blade (7), be provided with on the center, lower surface of body (3) and right side screw A (8) and with the corresponding screw B of the right flank of pressing plate (6) (9).