CN102581362A - Method for processing part with thin wall and changed-angle curved surface appearance - Google Patents

Abstract

The invention relates to a method for processing a part with a thin wall and a changed-angle curved surface appearance, which comprises the basic step of conducting front face and reverse face alternate equal thickness feeding milling. The method is characterized by a firstly determining first axial cutting depth A and a milling bearing width B on the front face; secondly enabling an front face axial cutting depth to be A and enabling a reverse face axial cutting depth to be A+B after being turned over; thirdly enabling an axial cutting depth to be 2B after being repeatedly turned over until a surplus width of the front face and the reverse face to be less than 2B, and then directly conducting balance finish-milling and putting in place. The method adopts an axial unequal height circumferential cutting method, enables the part to be evenly stressed in a cutting process and enables stress release of a material to be even, thereby effectively controlling the deformation problem of the part with the thin wall and the changed-angle curved surface appearance.

Description

Thin-walled varied angle curved profile machining parts

Technical field

The present invention relates to a kind of thin-walled varied angle curved profile machining parts, belong to field of machining.

Background technology

Current aviation machine adds the field, because the requirement of intensity and assembling has more thin-walled varied angle curved surface part.In the development and production; The technical staff is to process shape in it earlier according to traditional machine adding method mostly often; The reprocessing profile, such processing method makes part stress inhomogeneous, the Stress Release of material is inhomogeneous and cause the distortion of part; The size after thereby the machine that influences part adds, qualification rate are also relatively low.Perhaps utilize frock to come the interior profile of support part; Attempt to control part deformation; Yet in the development and production, the part of design often all needs once the change in design to twice, like this also change thereupon of frock; The expense that relates to is not only expensive, and the problem on deformation of part also can't be controlled effectively.

Summary of the invention

The technical problem that the present invention will solve provides a kind of thin-walled varied angle curved profile machining parts; This method adopts the high ring cutting method that axially do not wait; Make part stressed even in working angles; The Stress Release of material is also relatively more even, thereby has effectively controlled the problem on deformation of thin-walled varied angle curved profile part.

For overcoming the above problems; Concrete technical scheme of the present invention is following: a kind of thin-walled varied angle curved profile machining parts; Basic step replaces equal thickness feeding milling for curved surface is carried out positive and negative, it is characterized in that: at first confirm positive axial first cutting depth A and milling load-bearing width B, positive then axially cutting depth is A; The axial cutting depth of reverse side is A+B behind the turn-over; Repeatedly the axial cutting depth of turn-over is 2B then,, then directly carries out the surplus finish-milling and puts in place less than 2B up to the last margin widths of positive and negative.

This thin-walled varied angle curved profile machining parts adopts said method, and in the profile, supporting role has all been played at the unhewn position of opposite side in cutting; Such cutting way makes part stress even; Also relatively evenly, the problem on deformation of part has also reached effective control to the Stress Release of material, and the cutting load of cutter is little simultaneously; Make the Tool in Cutting process become brisk gradually, thin-walled parts varied angle curved profile surface quality has also reached greatly to be improved.

Description of drawings

Fig. 1 is the radial cross-section of thin-walled varied angle curved profile part.

Fig. 2 is the axial cutaway view of thin-walled varied angle curved profile part.

The specific embodiment

A kind of thin-walled varied angle curved profile machining parts, basic step replaces equal thickness feeding milling for curved surface is carried out positive and negative, and edge strip thickness as shown in Figure 1 is 1.5mm; Be milled into 3.5mm when rough milling, promptly interior profile is respectively stayed the 1mm surplus, and the machine direction of interior profile is the direction of arrow; As shown in Figure 2, confirm that at first positive axial first cutting depth is 1mm and milling load-bearing width 2mm, positive then axially cutting depth is 1mm; The axial cutting depth of reverse side is 3mm behind the turn-over, and positive so promptly have the surplus of 2mm to play a supporting role, and repeatedly the distance of turn-over axial feed is 4mm then; When guaranteeing to cut at every turn; Opposing face all has the load-bearing width of 2mm,, then directly carries out the surplus finish-milling and puts in place less than 4mm up to the last margin widths of positive and negative.

Claims (1)

1. thin-walled varied angle curved profile machining parts; Basic step replaces equal thickness feeding milling for curved surface is carried out positive and negative, it is characterized in that: at first confirm positive axial first cutting depth A and milling load-bearing width B, positive then axially cutting depth is A; The axial cutting depth of reverse side is A+B behind the turn-over; Repeatedly the axial cutting depth of turn-over is 2B then,, then directly carries out the surplus finish-milling and puts in place less than 2B up to the last margin widths of positive and negative.

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