CN101549408A - Method for processing hole provided with dimensional tolerance away from seamed edge on acute angle section - Google Patents

Abstract

A method for processing hole provided with dimensional tolerance away from seamed edge on acute angle section is used for processing a hole away from a seamed edge on an acute angle section. The method comprises the following steps of: 1) preparing a pin provided with diameter D and length which can be chosen according to requirement and with diameter tolerance of h6 level; 2) placing an acute angel section localizer on a boring lathe table and localizing an acute angle face provided with a localizing hole on the table surface; 3) leading the pin to cling to one side face of the acute angle section and fixing the pin with glue; 4) figuring out the distance between far point of the pin diameter and the central point of the localizing hole with a formula: L3 equals L plus L1 plus L2, L1 equals D/2, L2 equals D/2 multiplied tan beta/2, and beta equals alpha; and 5) processing the localizing hole in a way that the boring lathe adopts the far point of the pin diameter to obtain alignment to carry out processing according to the size of L3. The method has the advantages of preserving the structure of the original acute angel section localizer and enhancing the efficiency for processing the acute angel section localizer.

Description

The processing method in the hole of provided with dimensional tolerance away from seamed edge on acute angle section

Technical field:

The invention is the processing method in the hole of processing provided with dimensional tolerance away from seamed edge on acute angle section.

Background technology:

In the manufacture process of aircraft rigger dress, often have the angle section locator of some acute angles, and on an acute angle face locating hole is arranged therein, this locating hole has size tolerance requirements apart from the seamed edge of angle section locator; The processing method of this type of locator is difficult problem always, because on boring machine during machining hole, technological datum should be a face, and seamed edge can't guarantee higher tolerance as technological datum, and processing method in the past is to increase the fabrication hole size of transferring on the side of angle section locator; This method existing problems are: 1. increase fabrication hole on the side of angle section locator, destroyed the structure of former angle section locator; 2. the size calculation of complex of fabrication hole, and increase boring machine workload.

Summary of the invention:

The purpose of the invention provides a kind of processing method in hole of provided with dimensional tolerance away from seamed edge on acute angle section of the working (machining) efficiency that can improve processing acute angle angle section locator; The purpose of the invention is to realize by following step: the processing method in the hole of provided with dimensional tolerance away from seamed edge on acute angle section, and its step is as follows:

1), preparation tool pin: the diameter D and the length of tool pin can be selected as required, and diameter tolerance should be h6 level tolerance;

2), the angle section locator of acute angle is placed on the boring table, there is the acute angle face of locating hole to be fixed on the work top;

3), with tool pin by on angle section one side that is placed on acute angle, and fix with glue;

4), calculate the distance of the diameter far point of tool pin apart from the central point of locating hole:

Computing formula: L3=L+L1+L2

L1＝D/2

L2＝D/2×tanβ/2

β＝α

5), processing locating hole: boring machine utilizes the diameter far point centering of tool pin, presses the L3 dimensioned.

The advantage of the invention: the working (machining) efficiency that has improved processing acute angle angle section locator.

Description of drawings:

Fig. 1 is the acute angle angle section locator structure schematic diagram that a locating hole is arranged on the acute angle face;

Fig. 2 has the acute angle angle section locator structure schematic diagram that a locating hole is arranged on the acute angle face of size;

Fig. 3 is added with tool pin and has the acute angle angle section locator structure schematic diagram that a locating hole is arranged on the acute angle face of symbol for dimensioning;

Fig. 4 is added with tool pin and has the acute angle angle section locator structure schematic diagram that a locating hole is arranged on the acute angle face of size;

Among the figure: 1, acute angle angle D-tool pin diameter β=α L-hole centre line distance L 3-hole centre line to the distance L 1=D/2L2-tool pin of acute angle seamed edge and boring table contact point to the acute angle seamed edge of acute angle angle section locator 2, tool pin 3, boring table α-acute angle angle section locator of a locating hole is arranged on acute angle face to the far point distance of tool pin diameter

The specific embodiment:

The processing method in the hole of provided with dimensional tolerance away from seamed edge on acute angle section, its step is as follows:

1), preparation tool pin: the diameter D and the length of tool pin can be selected as required, and diameter tolerance should be h6 level tolerance;

2), the angle section locator of acute angle is placed on the boring table, there is the acute angle face of locating hole to be fixed on (what the connotation of location is) on the work top;

3), with tool pin by on angle section one side that is placed on acute angle, and fix with glue;

4), calculate the distance of the diameter far point of tool pin apart from the central point of locating hole:

Computing formula: L3=L+L1+L2

L1＝D/2

L2＝D/2×tanβ/2

β＝α

5), processing locating hole: boring machine utilizes the diameter far point centering of tool pin, presses the L3 dimensioned.

Angle section locator in conjunction with the acute angle that has size describes processing method in detail set by step:

The angle section locator size of acute angle is as follows: α=61 °

Location aperture Φ 15H7

L＝120±0.02mm

The tool pin size is as follows: D=Φ 20h6

Length 80mm

Step:

1), preparation tool pin: now selecting the tool pin diameter for use according to the width of tool pin is that Φ 20h6 length is 80mm;

2), the angle section locator of acute angle is placed on the boring table, there is the acute angle face of locating hole to be positioned on the work top;

3), with tool pin by on angle section one side that is placed on acute angle, and fix with 502# glue, prevent that tool pin from moving;

4), calculate the distance of the diameter far point of tool pin apart from the central point of locating hole: L3=135.89 ± 0.02mm;

5), processing locating hole: boring machine utilizes the diameter far point centering of tool pin, presses L3=135.89 ± 0.02mm dimensioned.

Claims (1)

1, the processing method in the hole of provided with dimensional tolerance away from seamed edge on acute angle section, its step is as follows:

1), preparation tool pin: the diameter D and the length of tool pin can be selected as required, and diameter tolerance should be h6 level tolerance;

2), the angle section locator of acute angle is placed on the boring table, there is the acute angle face of locating hole to be fixed on the work top;

3), with tool pin by on angle section one side that is placed on acute angle, and fix with glue;

4), calculate the distance of the diameter far point of tool pin apart from the central point of locating hole:

Computing formula: L3=L+L1+L2

L1＝D/2

L2＝D/2×tanβ/2

β＝α

5), processing locating hole: boring machine utilizes the diameter far point centering of tool pin, presses the L3 dimensioned.

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