CN103182554A - Processing method for spatial composite surface of column of pyramid derrick - Google Patents

Abstract

The invention discloses a processing method for a spatial composite surface of a column of a pyramid derrick. The processing method comprises the following steps: step 1, a space compound angle gamma of two angles in two planes, that is, the deflection angle of a universal right-angle milling head, and a placing angle theta of the two angles in the two planes of the column in space are calculated through analysis, modeling and derivation based on two coordinate projected angles alpha and beta of a front view and a top view provided in a column drawing; and step 2, according to the calculated placing angle theta, an inclination angle of V-shaped bracket is formed, so that the inclination angle of an inclined plane of the V-shaped bracket is theta and the requirement of correct positioning of the placing angle in actual production process of the column is met, and then processing is carried out after the deflection angle of the universal right-angle milling head is adjusted.

Description

The processing method of derrick column space composite surface angle

Technical field

The invention belongs to machining manufacturing technology field, relate to the processing method of a kind of derrick column space composite surface angle.

Background technology

Along with the implementation of ocean development strategy, the ocean equipment increases fast, and ocean tower derrick is to be built by many members, and is higher to the requirement on machining accuracy of its single member.

But for the processing column of the composite surface angle of having living space, existing ocean tower derrick exists compound angle can not accurate Calculation, and the machining accuracy error is bigger, the situation that working (machining) efficiency is low.Such machining parts and computational methods have become a difficult difficult problem to hold in technology and the manufacturing, for a long time, owing to there is not the method for standard to instruct, can't realize standardization technological design accurately and effectively and calculating, caused very big puzzlement for technological work and produced on-site.Therefore, to the type part fabrication scheme finalize the design again, process data calculating, optimization and standardization technological design, become a problem that needs emphasis to solve.

Summary of the invention

The processing method that the purpose of this invention is to provide a kind of derrick column space composite surface angle, having solved in the prior art derrick column compound angle can not accurate Calculation, and the machining accuracy error is bigger, the problem that working (machining) efficiency is low.

The technical solution adopted in the present invention is, the processing method of a kind of derrick column space composite surface angle is implemented according to following steps:

Step 1, calculate the deflection angle of omnipotent right-angle milling head and put angle

1.1) by given front view and vertical view two coordinate projection angle [alpha] and the β of column drawing, calculate the two compound angle γs of angle in the space in the biplane according to following formula (1), namely the deflection angle of omnipotent right-angle milling head is;

$\mathrm{\&gamma;}=\mathrm{arctg}\left|\frac{\sqrt{{\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="HDA00002935005900011.png,HDA00002935005900022.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\mathrm{\&alpha;}+{\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="HDA00002935005900011.png,HDA00002935005900022.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\mathrm{\&beta;}}}{\mathrm{tg\&alpha;}*\mathrm{tg\&beta;}}\right|,---\left(1\right)$

1.2) by given front view and vertical view two coordinate projection angle [alpha] and the β of column drawing, calculate the put angle θ of column in the space according to following formula (2) and be;

$\mathrm{\&theta;}=\mathrm{arctg}\left|\left(\frac{\mathrm{tg\&beta;}}{\mathrm{tg\&alpha;}}\right)\right|;---\left(2\right)$

The angle θ value of putting that step 2, foundation calculate is made the V-type support, makes that the inclination angle on an inclined-plane of V-type support is θ, can satisfy column is put the angle in actual production process correct location, adjusts the deflection angle of omnipotent right-angle milling head then and processes.

The invention has the beneficial effects as follows: improved the crudy of derrick, be applicable to technological design and the manufacturing of all the type derricks, made the technological design of part of the type quick and precisely convenient, improved working (machining) efficiency effectively.

Description of drawings

Fig. 1 is the operation principle schematic diagram of the inventive method;

Fig. 2 is the α angle schematic diagram of the given derrick column of column front view;

Fig. 3 is the β angle schematic diagram of the given derrick column of column vertical view;

Fig. 4 is the putting position schematic diagram of embodiment column on V-shaped rest in the inventive method;

Fig. 5 is the putting position schematic diagram of another embodiment column on V-shaped rest in the inventive method.

Among the figure, 1. bent plate, 2.V shape support, 3. square chest, 4. column, 5. wing plate.

The specific embodiment

The present invention is described in detail below in conjunction with the drawings and specific embodiments.

For column, its length is mostly more than 10 meters, and the cross section is rectangle or square, and its bottom (or top) has a projection angle on front view and vertical view, so its machined surface is a space composite surface.The space composite surface is a physical plane, and actual adding can not realize that it is at the projection angle of front view and vertical view by the method for milling face for twice man-hour; Realize the processing of this space composite surface, must finish by once milling face.Therefore want the processing of implementation space composite surface, suitable frock must be arranged and adopt suitable clamping disposing way, the projection angle of column both direction accurately is converted into a Plane Angle in the plane, realizes projected angle time processing moulding in a station of column both direction.

The processing method of derrick column of the present invention space composite surface angle, α angle and the vertical view given β angle given according to column drawing front view, calculate θ angle (being the angle of putting of column) and compound angle γ angle (being the deflection angle of universal milling head) of V-type support 2 respectively by formula, realize projected angle time processing moulding in a station of column both direction, thereby realize the accurate processing of column space composite surface angle, improve the crudy of column.

The processing method of derrick column of the present invention space composite surface angle comprises that the angle of definite method of compound angle, definite method of putting angle, V-type support 2 is determined method, the laying method of column on V-type support 2, and concrete steps comprise:

Step 1, calculate the deflection angle of omnipotent right-angle milling head and put angle

1.1) with reference to Fig. 2 and Fig. 3, by column drawing given front view and vertical view two coordinate projection angle [alpha] and β, by analysis, modeling, derivation, calculate the two compound angle γs of angle in the space in the biplane according to following formula (1), namely the deflection angle of omnipotent right-angle milling head is;

$\mathrm{\&gamma;}=\mathrm{arctg}\left|\frac{\sqrt{{\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="HDA00002935005900011.png,HDA00002935005900022.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\mathrm{\&alpha;}+{\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="HDA00002935005900011.png,HDA00002935005900022.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\mathrm{\&beta;}}}{\mathrm{tg\&alpha;}*\mathrm{tg\&beta;}}\right|,---\left(1\right)$

1.2) with reference to Fig. 2 and Fig. 3, by column drawing given front view and vertical view two coordinate projection angle [alpha] and β, by analysis, modeling, derivation, calculate according to following formula (2) that two the put angle θs of angle in the space are in the column biplane;

$\mathrm{\&theta;}=\mathrm{arctg}\left|\left(\frac{\mathrm{tg\&beta;}}{\mathrm{tg\&alpha;}}\right)\right|;---\left(2\right)$

The inclination angle of putting angle θ value making V-type support 2 that step 2, foundation calculate, make that the inclination angle on 2 one inclined-planes of V-type support is θ, can satisfy column and in actual production process, put the correct location at angle, adjust the deflection angle of omnipotent right-angle milling head then and process, comprise following several situation:

With reference to Fig. 1, processing unit (plant) structure since the inventive method is, comprise V-type support 2, V-type support 2 is arranged on the square chest 3, square chest 3 plays the effect of the base seat support of fixed support, column 4 is lain against on the V-type groove on the V-type support 2, when the left side of column 4 is composite surface to be processed, the left side of column 4 adopts bent plate 1 fixing, bent plate 1 inner surface contacts with V-type support 2 end faces, be used for preventing that the column process is mobile backward, the deflection angle of adjusting omnipotent right-angle milling head is γ, can finish the processing of derrick column space composite surface angle by time processing;

Below relate to the structure of Fig. 4, Fig. 5 is described, be A according to Fig. 1 and be described the restriction of technical scheme (not as) to (right view) installation site.

When machined surface is the right side of column 4, and under column front view and end face that vertical view the is processed situation that direction is consistent in plane, when placing column, from the column right side, must make the θ angle hypotenuse of V-type support 2 be placed on the left side, the wing plate 5 of column is placed on the θ angle hypotenuse of V-type support 2, with reference to Fig. 4;

When machined surface is the right side of column 4, and column front view and end face that vertical view is processed are in plane under the inconsistent situation of direction, when placing column, from the column right side, must make the θ angle hypotenuse of V-type support 2 be placed on the right side, wing plate 5 is placed on the θ angle hypotenuse of V-type support 2, with reference to Fig. 5;

When machined surface is the left side of column 4, and under column front view and end face that vertical view the is processed situation that direction is consistent in plane, when placing column, from the left side, must make the θ angle hypotenuse of V-type support 2 be placed on the right, wing plate 5 is placed on the θ angle hypotenuse of V-type support 2, with reference to Fig. 5;

When machined surface is the left side of column 4, and column front view and end face that vertical view is processed are in plane under the inconsistent situation of direction, when placing column, from the left side, must make the θ angle hypotenuse of V-type support 2 be placed on the left side, wing plate 5 is placed on the θ angle hypotenuse of V-type support 2, with reference to Fig. 4.

The inventive method, by setting up correspondingly rational mathematical model, and Mathematical Modeling is analyzed and researched, derived the computing formula of space composite surface angle and put the computing formula of angle, simultaneously in conjunction with production scene reality, according to the size design of putting angle V-type support 2; Repeatedly formula is verified simulation finally by crossing the NX three-dimensional software, guarantee the accuracy of Mathematical Modeling, derivation formula, solved the processing problems of tower derrick column space composite surface angle first effectively, the technical barrier that how part is put when having solved simultaneously processing composite surface angle well, effectively improve accuracy, standardization and the design efficiency of technical papers, improved the workmanship of derrick key component.

Claims (6)

1. the processing method of a derrick column space composite surface angle is characterized in that, implements according to following steps:

Step 1, calculate the deflection angle of omnipotent right-angle milling head and put angle

1.1) by given front view and vertical view two coordinate projection angle [alpha] and the β of column drawing, calculate the two compound angle γs of angle in the space in the biplane according to following formula (1), namely the deflection angle of omnipotent right-angle milling head is;

$\mathrm{\&gamma;}=\mathrm{arctg}\left|\frac{\sqrt{{\mathrm{tg}}^2\mathrm{\&alpha;}+{\mathrm{tg}}^2\mathrm{\&beta;}}}{\mathrm{tg\&alpha;}*\mathrm{tg\&beta;}}\right|,---\left(1\right)$

1.2) by given front view and vertical view two coordinate projection angle [alpha] and the β of column drawing, calculate the put angle θ of column in the space according to following formula (2) and be;

$\mathrm{\&theta;}=\mathrm{arctg}\left|\left(\frac{\mathrm{tg\&beta;}}{\mathrm{tg\&alpha;}}\right)\right|;---\left(2\right)$

The angle θ value of putting that step 2, foundation calculate is made V-type support (2), make that the inclination angle on (2) inclined-planes of V-type support is θ, can satisfy column and in actual production process, put the correct location at angle, adjust the deflection angle of omnipotent right-angle milling head then and process.

2. the processing method of derrick column according to claim 1 space composite surface angle, it is characterized in that: in the described step 2, when machined surface is the right side of column, and under column front view and end face that vertical view the is processed situation that direction is consistent in plane, when placing column, from the column right side, must make the θ angle hypotenuse of V-type support (2) be placed on the left side, the wing plate (5) of column is placed on the θ angle hypotenuse of V-type support (2).

3. the processing method of derrick column according to claim 1 space composite surface angle, it is characterized in that: in the described step 2, when machined surface is the right side of column, and column front view and end face that vertical view is processed are in plane under the inconsistent situation of direction, when placing column, from the column right side, must make the θ angle hypotenuse of V-type support (2) be placed on the right side, the wing plate (5) of column is placed on the θ angle hypotenuse of V-type support (2).

4. the processing method of derrick column according to claim 1 space composite surface angle, it is characterized in that: in the described step 2, when machined surface is the left side of column, and under column front view and end face that vertical view the is processed situation that direction is consistent in plane, when placing column, from the left side, must make the θ angle hypotenuse of V-type support (2) be placed on the right, the wing plate (5) of column is placed on the θ angle hypotenuse of V-type support (2).

5. the processing method of derrick column according to claim 1 space composite surface angle, it is characterized in that: in the described step 2, when machined surface is the left side of column, and column front view and end face that vertical view is processed are in plane under the inconsistent situation of direction, when placing column, from the left side, must make the θ angle hypotenuse of V-type support (2) be placed on the left side, the wing plate (5) of column is placed on the θ angle hypotenuse of V-type support (2).

6. according to the processing method of claim 2,3,4 or 5 described derrick column space composite surface angles, it is characterized in that: described V-type support (2) is arranged on the square chest (3);

When the left side of column was composite surface to be processed, the left side of column was set with bent plate (1), and bent plate (1) inner surface contacts with V-type support (2) end face.

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