CN104924040A - Plate-type structural component machining method - Google Patents

Abstract

The invention belongs to the technical field of plate part forging machining and discloses a plate-type structural component machining method. The plate-type structural component machining method comprises the steps of machining technology process design, machining allowance distribution, numerical control milling and microscale bore cutting. According to the plate-type structural component machining method, through the addition of a rough milling procedure and an artificial ageing procedure and the reasonable distribution of machining allowances, the problems that the parts are deformed, the machining period is long and the form and location tolerance is difficult to be guaranteed are solved; through the design of cutting parameters and a tool path route, the machining efficiency of products and the yield of the parts are improved.

Description

A kind of processing method of plate structure part

Technical field

The present invention relates to plate material parts forging processing technique field, particularly a kind of processing method of plate structure part.

Background technology

In space product, for the plate structure part of installation control system, due to its assemble datum level used, installed surface have influence on control system install after precision, the datum level related in this type of structural member, installed surface, its form and position tolerance required precision is general higher, wherein the planarity requirements of datum level is within 0.008mm, and the planarity requirements of installed surface within 0.015mm, and requires within 0.025mm with the perpendicularity of datum level.

The manufacture method that this type of structural member is traditional, by machining final molding after many employing aluminium casting dummings.Work in-process exists casting dimension to be coordinated, the problems such as Deformation control, simultaneously, datum level, installed surface area are larger, Geometrical Tolerance Principle is higher, adopt line to coordinate in machining, adopt right boring repeatedly, repeatedly to carry out boring, advanced study and training to datum level, installed surface, meet design requirement to reach product quality.But there is obvious problem in this manufacture method: the sand holes that cast(ing) surface exists are applied in whole process, cause the possibility still having product rejection during fine finishining.The quality influence of foundry goods, to the manufacturing cycle of whole product, wastes a large amount of Productive statistics in early stage; Meanwhile, the process equipment of use is single, causes device resource in short supply.And relying on right boring to process, the process-cycle is long, and efficiency is lower.

Summary of the invention

The invention provides a kind of processing method of plate structure part, solve in prior art, working (machining) efficiency is low, mounting surface is of poor quality, the underproof technical problem of installed surface form and position tolerance, reaches and improves part quality, decrease the effect of manufacturing cycle.

For solving the problems of the technologies described above, the invention provides a kind of processing method of plate structure part, comprising: processing process design, allowance distribution, numerical control milling and micro-boring are cut;

Described processing process design comprises:

Rough mill interior profile, equal made allowance 2mm;

The stress in processing is eliminated by artificial aging;

Extremely, installed surface stays 0.15mm ~ 0.2mm boring amount to the inside and outside shape of finish-milling;

Right boring datum level, installed surface, ensure each form and position tolerance;

Right boring is assisted in hand lapping, removes datum level, installed surface local high spot;

Described allowance distributes and comprises:

Roughing material removal amount is not less than 85%, and roughing made allowance is 2mm;

In fine finishining, profile is all to size, datum level, installed surface made allowance 0.15mm ~ 0.2mm;

Right boring micro cutting, stays 0.01mm ~ 0.02mm amount of grinding;

Described numerical control milling comprises:

Tool selection minor diameter straight-tooth cutter, milling cutter diameter is not more than Φ 10;

Adopt high rotating speed, fast feeding, the mode of little cutting-in carries out the material amount of going;

Numerical control mill cuts Selecting parameter scope in table 1;

Table 1 selection of quantities in cutting scope

Speed of mainshaft r/min	Feed speed mm/min	Cutting-in mm	Cut wide mm
				10000～12000	3000～4000	0.4～0.6	3～5

The range of choice of the parameter that described micro-boring is cut is in table 2;

Table 2 selection of quantities in cutting scope

Speed of mainshaft r/min	Feed speed mm/min	Cutting-in mm
			800～900	40～50	0.005～0.1

。

The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:

The processing method of the plate structure part provided in the embodiment of the present application, adopts four key steps such as processing process design, allowance distribution, numerical control milling and micro-boring cutting; By numerical control mill, realize Roughing and fine machining, reasonable distribution allowance, and the mode adopting high-speed cutting, by form tolerance control at zone of reasonableness; By micro-boring, research datum level, installed surface, hand lapping is auxiliary removes local high spot, to reach qualified form and position tolerance and surface roughness; Rough milling operation, artificial aging operation and reasonable distribution allowance by increasing, solving part deformation, the problem that the process-cycle is long, form and position tolerance is difficult to ensure card; By improve working (machining) efficiency and the part qualification rate of product to cutting parameter and cut track path design.

Accompanying drawing explanation

The front view of the 5A06-H112 plate structure part that Fig. 1 provides for the embodiment of the present invention;

Fig. 2 is the A-A view of Fig. 1.

Detailed description of the invention

The processing method of a kind of plate structure part that the embodiment of the present invention provides, comprising: processing process design, allowance distribution, numerical control milling and micro-boring are cut;

Described processing process design comprises:

Rough mill interior profile, equal made allowance 2mm;

The stress in processing is eliminated by artificial aging;

Extremely, installed surface stays 0.15mm ~ 0.2mm boring amount to the inside and outside shape of finish-milling;

Right boring datum level, installed surface, ensure each form and position tolerance;

Right boring is assisted in hand lapping, removes datum level, installed surface local high spot;

Described allowance distributes and comprises:

Roughing material removal amount is not less than 85%, and roughing made allowance is 2mm;

In fine finishining, profile is all to size, datum level, installed surface made allowance 0.15mm ~ 0.2mm;

Right boring micro cutting, stays 0.01mm ~ 0.02mm amount of grinding;

Described numerical control milling comprises:

Tool selection minor diameter straight-tooth cutter, milling cutter diameter is not more than Φ 10;

Adopt high rotating speed, fast feeding, the mode of little cutting-in carries out the material amount of going;

Numerical control mill cuts Selecting parameter scope in table 1;

Table 1 selection of quantities in cutting scope

Speed of mainshaft r/min	Feed speed mm/min	Cutting-in mm	Cut wide mm
				10000～12000	3000～4000	0.4～0.6	3～5

The range of choice of the parameter that described micro-boring is cut is in table 2;

Table 2 selection of quantities in cutting scope

Speed of mainshaft r/min	Feed speed mm/min	Cutting-in mm
			800～900	40～50	0.005～0.1

Wherein, and in the end 1mm correction is stayed in operation.

Below by a concrete part processing, this method is described.

See Fig. 1 and Fig. 2, one embodiment of the present of invention, part theoretical size is for should be 406 × 295 × 30, and work flow comprises successively:

Blank roughing:

Rough mill six sides, coordinate endoporus and evenly go each surplus, ensure each facial plane degree 0.2, perpendicularity 0.2.

Car endoporus, flat thickness two sides, size flatness 0.05, the depth of parallelism 0.1;

Profile in numerical control mill roughing:

Adopt high-speed milling, rotating speed is not less than 10000 revs/min, and each cutting-in is not more than 0.5mm.Cutter is selected to be: Φ 10R0

Roughing inside groove, monolateral made allowance 2mm.

Processing thickness two sides, the amount of going is about 1mm, ensures size flatness 0.1;

Heat treatment step: artificial aging.

Profile in numerical control mill fine finishining:

Adopt high-speed milling, rotating speed is not less than 10000 revs/min, and each cutting-in is not more than 0.3 ~ 0.5mm.Cutter is selected to be: Φ 10R0, Φ 6R0

Fine finishining inside groove is to size.

Process each hole;

Processing thickness two sides, gauge flatness 0.1, the depth of parallelism 0.15;

Processing dimension 406.5 two ends, ensure size a face perpendicularity 0.02.

Right boring:

Part is in room temperature thermostatic chamber in, be incubated more than 24 hours, adopt trace remove method carry out machining and be aided with hand lapping.Cutting parameter: cutting depth ap=0.005mm ~ 0.01mm; Speed of mainshaft n=800r/min ~ 900r/min; Cutting speed vf=40m/min ~ 50m/min;

Fine finishining C face, ensures size (for size 30 ± 0.05), flatness 0.02.

Fine finishining A face, size flatness 0.008, roughness 1.6;

Height point in C face, A face subrange is ground;

With location, C face, look for A face within 0.005, fine finishining B face, ensure size flatness 0.015, with benchmark A perpendicularity 0.025;

Surface treatment: anodic oxidation.

The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:

The processing method of the plate structure part provided in the embodiment of the present application, adopts four key steps such as processing process design, allowance distribution, numerical control milling and micro-boring cutting; By numerical control mill, realize Roughing and fine machining, reasonable distribution allowance, and the mode adopting high-speed cutting, by form tolerance control at zone of reasonableness; By micro-boring, research datum level, installed surface, hand lapping is auxiliary removes local high spot, to reach qualified form and position tolerance and surface roughness; Rough milling operation, artificial aging operation and reasonable distribution allowance by increasing, solving part deformation, the problem that the process-cycle is long, form and position tolerance is difficult to ensure card; By improve working (machining) efficiency and the part qualification rate of product to cutting parameter and cut track path design.

It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.

Claims (1)

1. a processing method for plate structure part, is characterized in that, comprising: processing process design, allowance distribution, numerical control milling and micro-boring are cut;

Described processing process design comprises:

Rough mill interior profile, equal made allowance 2mm;

The stress in processing is eliminated by artificial aging;

Extremely, installed surface stays 0.15mm ~ 0.2mm boring amount to the inside and outside shape of finish-milling;

Right boring datum level, installed surface, ensure each form and position tolerance;

Right boring is assisted in hand lapping, removes datum level, installed surface local high spot;

Described allowance distributes and comprises:

Roughing material removal amount is not less than 85%, and roughing made allowance is 2mm;

In fine finishining, profile is all to size, datum level, installed surface made allowance 0.15mm ~ 0.2mm;

Right boring micro cutting, stays 0.01mm ~ 0.02mm amount of grinding;

Described numerical control milling comprises:

Tool selection minor diameter straight-tooth cutter, milling cutter diameter is not more than Φ 10;

Adopt high rotating speed, fast feeding, the mode of little cutting-in carries out the material amount of going;

Numerical control mill cuts Selecting parameter scope in table 1;

Table 1 selection of quantities in cutting scope

Speed of mainshaft r/min Feed speed mm/min Cutting-in mm Cut wide mm 10000～12000 3000～4000 0.4～0.6 3～5

The range of choice of the parameter that described micro-boring is cut is in table 2;

Table 2 selection of quantities in cutting scope

Speed of mainshaft r/min Feed speed mm/min Cutting-in mm 800～900 40～50 0.005～0.1

。