CN1788927A

CN1788927A - Six point positioning base line transfer method for refine casting blade

Info

Publication number: CN1788927A
Application number: CN 200510047739
Authority: CN
Inventors: 孙秉铎; 吴卫东; 郭彦东
Original assignee: Shenyang Liming Aero Engine Group Co Ltd
Current assignee: Shenyang Liming Aero Engine Group Co Ltd
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2006-06-21
Anticipated expiration: 2025-11-18
Also published as: CN100389004C

Abstract

The vane precision casting and six point positioning datum transferring process includes the following steps: 1. regulating the six point positioning fixture to determine the position and direction of the pressing mechanism in the six point positioning fixture based on the six positioning points on the vane; 2. casting the vane blank with finishing allowance of at least 2-4 mm; 3. installing the regulated six point positioning fixture inside the electric spark cutting machine; 4. fixing the van blank inside the six point positioning fixture; and 5. wire electrode cutting in the electric spark cutting machine to required sizes. The present invention has the advantages of capability of realizing datum transfer of super large precision cast vane, machining precision as high as 0.02 mm, lowered labor strength, shortened machining period and raised work efficiency.

Description

The method that smart casting blade six point location benchmark shift

Technical field

The present invention relates to the method that a kind of six point location benchmark shift, especially relate to the method that a kind of smart casting blade six point location benchmark shift.

Technical background

The method that traditional smart casting blade six point location benchmark shift is to adopt the method for casting square chest, its concrete processing step is: the square chest clamping that blade is woollen and prefabricated is on six point location anchor clamps, the woollen position that keeps relative with square chest of blade is concerned, the low-melting alloy of between blade woolen cloth and square chest, casting then, blade woolen cloth and square box shape are integral, the outer surface of square chest is carried out clamping as machining benchmark, realize machining.But for the turbo blade of heavy combustion engine, because its volume is big, weight is big, after the method casting of employing casting square chest, difficult; And directly adopt six point location fixture support, compress the blade woolen cloth, then can cause the blade surface of producing impression to occur, influence leaf quality, and six point location anchor clamps clampings, compress unreliable.

Summary of the invention

The present invention is in order to solve the problem of above-mentioned existence, the method that provides a kind of smart casting blade six point location benchmark to shift, by strengthening the surplus at the woollen edge of blade, utilize the location, surface after the woollen line cutting processing of blade, for follow-up machining provides machining benchmark.

The method that the smart casting blade six point location benchmark of the present invention shift may further comprise the steps:

1, adjust six point location anchor clamps: six point location anchor clamps are the anchor clamps that are used to clamp workpiece on the lathe, determine the position and the direction of six point location anchor clamps hold-down mechanisms according to six anchor points on the smart casting blade blade;

2, cast blade woolen cloth: with respect to smart casting blade finished product contour dimension, blade edge in woollen integral shroud one side leaves flat face, the scope at the minimum place of distance of flat face that it leaves and finished product blade edge is 2mm～4mm, uses for follow-up line cutting processing;

3, six point location anchor clamps are installed: the six point location anchor clamps that will adjust are installed on the WEDM;

4, clamping blade woolen cloth: in six point location anchor clamps, six anchor points of anchor clamps and six anchor points on the smart casting blade blade are matched the woollen clamping of blade;

5, carry out the line cutting processing: process according to the given size of cutting machine technological procedure with WEDM, the reference surface of gained is the machining benchmark surface of follow-up machining operation after the line cutting processing; The reference surface of processing back gained and the design basis (being the blade profile coordinate system) of blade keep position relation accurately, and realization blade design basis is transferred on the surface of line cutting processing.

Advantage of the present invention is that the benchmark that can realize the smart casting blade of ultra-large type shifts, and the machining benchmark of employing gained of the present invention is more accurate, reliable, and its machining accuracy can reach 0.02mm; And reduced casting square chest, off-square case, operation such as depollute, reduced working strength of workers, reduce work hours, improved efficient.

Description of drawings

Fig. 1 is the heavy combustion engine turbo blade casting structure front view of the present invention's processing,

Fig. 2 is the vertical view of Fig. 1,

Fig. 3 is the A-A cutaway view of Fig. 1,

Fig. 4 is certain type submarine turbo blade casting structure front view of the present invention's processing,

Fig. 5 is the vertical view of Fig. 4,

Fig. 6 is the V-V cutaway view of Fig. 4,

Fig. 7 is the I-I cutaway view of Fig. 4;

1 integral shroud among the figure, 2 blades, 3 tenons, C1 is the reference surface after the woollen line cutting processing of heavy combustion engine turbo blade, C2 is a heavy combustion engine turbine finished product blade profile, C3 is the reference surface after the woollen line cutting processing of certain type submarine turbo blade, C4 is certain type submarine turbine finished product blade profile, D1, D2, D3, D4, D5, P1 is the lip-deep anchor point of the woollen nothing left amount of heavy combustion engine turbo blade, S1, S2, S3, S4, S5, S6 is the lip-deep anchor point of the woollen nothing left amount of certain type submarine turbo blade, X, the Y coordinate is the design basis of blade, and the B line is the blade rotation centerline.

The specific embodiment

Describe the present invention in detail below in conjunction with the drawings and specific embodiments:

Embodiment 1: (as Fig. 1, Fig. 2, shown in Figure 3) is example with the heavy combustion engine turbo blade, and the method that its six point locations benchmark shifts may further comprise the steps:

1, adjust six point location anchor clamps: six point location anchor clamps are the anchor clamps that are used to clamp workpiece on the lathe, determine the position and the direction of six point location anchor clamps hold-down mechanisms according to six anchor point D1, D2, D3, D4, D5, P1 on the smart casting blade blade;

2, cast blade woolen cloth: with respect to smart casting blade finished product profile C2 size, blade edge C2 in woollen integral shroud 1 one sides leaves flat face, the scope at the minimum place of distance of flat face that it leaves and finished product blade edge C2 is 2mm～4mm, uses for follow-up line cutting processing;

4, clamping blade woolen cloth: in six point location anchor clamps, six anchor points of anchor clamps and six anchor point D1, D2, D3, D4, D5, P1 on the smart casting blade blade 2 are matched the woollen clamping of blade;

5, carry out the line cutting processing: process according to the given size of cutting machine technological procedure with WEDM, the reference surface C1 of gained is the machining benchmark surface of follow-up machining operation after the line cutting processing; The reference surface of processing back gained and the design basis (being the blade profile coordinate system) of blade keep position relation accurately, and realization blade design basis is transferred on the surface of line cutting processing.

Embodiment 2: (as Fig. 4, Fig. 5, Fig. 6, shown in Figure 7) is example with certain type submarine turbo blade, and the method that its six point locations benchmark shifts may further comprise the steps:

1, adjust six point location anchor clamps: six point location anchor clamps are the anchor clamps that are used to clamp workpiece on the lathe, determine the position and the direction of six point location anchor clamps hold-down mechanisms according to six anchor point S1, S2, S3, S4, S5, S6 on the smart casting blade blade;

2, cast blade woolen cloth: with respect to smart casting blade finished product profile C4 size, blade edge C4 in woollen integral shroud 1 one sides leaves flat face, the scope at the minimum place of distance of flat face that it leaves and finished product blade edge C4 is 2mm～4mm, uses for follow-up line cutting processing;

4, clamping blade woolen cloth: in six point location anchor clamps, six anchor points of anchor clamps and six anchor point S1, S2, S3, S4, S5, S6 on the smart casting blade blade 2 are matched the woollen clamping of blade;

5, carry out the line cutting processing: process according to the given size of cutting machine technological procedure with WEDM, the reference surface C3 of gained is the machining benchmark surface of follow-up machining operation after the line cutting processing; The reference surface of processing back gained and the design basis (being the blade profile coordinate system) of blade keep position relation accurately, and realization blade design basis is transferred on the surface of line cutting processing.

Claims

1, a kind of method of smart casting blade six point location benchmark transfer is characterized in that may further comprise the steps:

(1), adjust six point location anchor clamps: six point location anchor clamps are the anchor clamps that are used to clamp workpiece on the lathe, determine the position and the direction of six point location anchor clamps hold-down mechanisms according to six anchor points on the smart casting blade blade;

(2), cast blade woolen cloth: with respect to smart casting blade finished product contour dimension, blade edge in woollen integral shroud one side leaves flat face, the scope at the minimum place of distance of flat face that it leaves and finished product blade edge is 2mm～4mm, uses for follow-up line cutting processing;

(3), six point location anchor clamps are installed: the six point location anchor clamps that will adjust are installed on the WEDM;

(4), clamping blade woolen cloth: in six point location anchor clamps, six anchor points of anchor clamps and six anchor points on the smart casting blade blade are matched the woollen clamping of blade;

(5), carry out the line cutting processing: process according to the given size of cutting machine technological procedure with WEDM, the reference surface of gained is the machining benchmark surface of follow-up machining operation after the line cutting processing.