The three-dimensional substance that is based on spare parts of SolidWorks helicoid machinery builds modular technology

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Introduce through typical example, use SolidWorks to implement helicoid machinery part the three-dimensional process that build a model, offer specific means of settlement to the case of a few gradual change of helicoid. The helix part that spare parts of 1 helicoid machinery builds a model to analyse spare parts of columnar helicoid machinery is comprised by helix substance and helix chamfer, cut with the planar cut that adopts helicoid machinery axis of workpiece, cut helix substance and helix chamfer get his respectively sectional, sectional outline says for " axis sectional outline " . With perpendicular Yu Luo the planar cut of axis of workpiece of machinery of face coming back is cut, what can get helix substance and helix chamfer respectively is sectional, sectional outline says hang down for " sectional outline " . The helix substance part of helicoid machinery spare parts, can consider as by the axis of helix substance sectional or hang down the contrail of drawing of scanning of sectional edge corkscrewed yarn. The axis that helix chamfer also can consider as helix groove likewise sectional or hang down the contrail that scanning of sectional edge corkscrewed yarn excises. SolidWurks is the three-dimensional software that is based on a feature. Undertake on the foundation that its build modular feature is the outline in the graph. In its helix feature in building a course, a few element that need to install corkscrewed yarn and scanning are sectional outline and type of unripe set prescription. The element of corkscrewed yarn includes to define way (height and pitch and pen number, pen number, height and pitch) , come back to (Zun Xuan, dextral) , make way, still can make the pitch corkscrewed yarn such as taper in addition. Sectional outline cent is 2 kinds, namely sectional outline mixes the axis hang down sectional outline. Type of unripe set prescription includes 2 kinds, scanning drawing and scanning are excised. Through using feature of the scanning in SolidWorks, according to the characteristic of helicoid machinery spare parts, undertake installing reasonably, can build requires three-dimensional and hypostatic model. The method building a model of spare parts of 2 helicoid machinery carries particular helicoid machinery part, elaborated feature of the scanning in using SolidWorks to undertake establishing modular method. 2.

Of 1 whorl spare parts three-dimensional the graph that build a model the 1 design that is common thread, the axis of its whorl part is sectional if pursue,1 local profile is shown, excise coping for the equilateral triangle (the coping that actual condition is an equilateral triangle is round horn, main reason wears away for cutting tool) , became one echelon so. Hang down sectional outline is more complex, because this answers,with the axis sectional outline regards scanning as sectional outline, undertake scanning drawing for scanning method with corkscrewed yarn (scanning is excised) a future life becomes whorl feature. The main operation measure that with the axis sectional outline regards scanning outline as to undertake scanning drawing (with M=20 · 2.

5) is exemple. (1) uses drawing feature order, generate a diameter to be equal to whorl trail D1=17.

294 Mm, the columnar matrix; (2) of H=30 Mm generates pitch P=2 on columnar face.

The corkscrewed yarn of 5 Mm, corkscrewed yarn diameter is 17.

294 Mm; (3) is on the some plane that passes axes the rod that makes thread is sectional outline, requirement whorl axis is sectional outline (the long hemline of echelon) with cylinder and axis the; (4) of the coincide that cross a line with sectional planar place uses scanning to pull intermediate feature order, with whorl axis sectional outline is scanning outline, it is scanning method with corkscrewed yarn, those who make thread is three-dimensional build a model. Use scanning to excise a future life to become, main operation move is as follows: ① uses drawing feature command to generate D=20 Mm, the ② of columnar matrix; of H =30mm generates pitch P=2 on cylinder.

The corkscrewed yarn of 5 Mm, corkscrewed yarn diameter is 17.

294 Mm; ③ is in through the rod of whorl chamfer is being made on axes some plane sectional outline, the axis of requirement chamfer is sectional outline (the long hemline of echelon) with cylinder and axis the ④ of; of the coincide that cross a line with sectional planar place uses scanning to excise diagnostic command, with whorl chamfer axis sectional outline is scanning outline, it is scanning method with corkscrewed yarn, those who make thread is three-dimensional build a model. The kill that place of afore-mentioned 2 kinds of methods make is same. But some structures, get the groove rear of the head like the snail end of whorl spare parts, fried dough twist, the part retreating a knife of axial gear, these structures are shown gradually shallow condition. When making a tail, need to change the style of unripe set prescription of corkscrewed yarn. The common thread of the end that take snail (with M=20 · 2.

5 for exemple, p=2.

When 5 Mm, ending X=6.

3) . The move that build a model is as follows: ① uses drawing feature command to generate D=20 Mm, the ② of columnar matrix; of H=40rnrn generates pitch P= 2 on cylinder.

The corkscrewed yarn of 5 Mm, corkscrewed yarn diameter is 17.

294. ; ③ makes cone-shaped corkscrewed yarn in the terminal of corkscrewed yarn (outside taper piece, a=12.

120, p = 2.

5mm, h=6.

3 Mm) , awl shape corkscrewed yarn is initiative diametical d2 17.

294InIn, the end point of view of the corkscrewed yarn before initial point of view is mixed is same, the others parameter is identical, use composite curve tool to incorporate 2 corkscrewed yarn ④ of new; of helix composite curve is in through the rod of whorl chamfer is being made on axes some plane sectional outline, the axis of requirement chamfer is sectional outline (the long hemline of echelon) the method that with cylinder and axis the ⑤ of; of the coincide that cross a line with sectional planar place uses scanning to excise makes whorl and whorl tail, with the axis of whorl chamfer sectional outline is scanning outline, it is scanning method with helix composite curve, those who make thread is three-dimensional build a model (2) seeing a picture. Use scanning excision 2 times, move is as follows: ① makes whorl part, the place before the method is like narrates; ② to make awl shape corkscrewed yarn in corkscrewed yarn extreme, parameter as above, ask identical; ③ uses the end angle of the corkscrewed yarn of ibid of initial point of view of corkscrewed yarn of this awl shape substance of the changeover in draft scale cites tool, entity of chamfer of whorl chamfer extreme changeover becomes draft, it is scanning outline with this draft, cone-shaped corkscrewed yarn is scanning method, use scanning to excise diagnostic command to make whorl ending part. 2.

2 cylinder shake gear to blow three-dimensional build a model to be with involute helical gear exemple (3) seeing a picture, the tooth flank of gear submits helix form. The end panel tooth profile of helical gear is involute, end panel tooth profile but by the cipher out of concerned computation formula of helical gear corresponding parameter, and its axis is sectional outline is complex troublesome picture, because this serves as sectional outline with end panel tooth profile. Three-dimensional build a model to there is: of 3 kinds of methods? Diameter of? of  of  of storehouse of head of value of Zhuang Qiao Qi growing permanent teeth is) of tine root round diameter, undertake scanning drawing with a tooth profile next, the columnar matrix that makes gear into ② of travel array; after that (the diameter carries round diameter) on the head for tine, use next alveolar excise into line scanning, make end panel tooth profile into ③ of travel array; after that, undertake scanning drawing next. The 3rd kind of square hair is better. End panel builds a model, the three-dimensional model of helical gear of scanning drawing cylinder, is main move as follows (exemple: ? Value back Qi seeks N=2 Mm asking Zuo , z=25, han*=1, cn*=0.

25, α N=20 ° , β =15 ° : (1) presses the Mn of method extent modulus that give out, the parameter computation such as N of tine number Z, helix angle β , pressure angle α gives =51 of β of D = Zmn/cos of reference circle diameter.

7638mm, =606 of β of D/tan of π of P= of corkscrewed yarn pitch.

909mm.

(2) makes corkscrewed yarn, p=606 of corkscrewed yarn pitch.

909 Mm, d=51 of corkscrewed yarn diameter.

7638 Mm, guide tooth profile of person end panel pursues (this move later development has an explanation) ; (3) commands with scanning drawing feature, it is scanning with end panel tooth profile sectional, build three-dimensional model for scanning method with corkscrewed yarn, after that command of feature of reoccupy drawing excision builds axial aperture and key seat. To bringing the axial gear of the structure that retreat a knife, its retreat the groove of knife part to become shallow gradually, can use the method with the whorl same tail that makes thread to finish this retreats knife chamfer three-dimensional build a model. Main move is as follows (exemple: MN=2 Mm, z=10, han*=1, cn*=0.

25, α N=20 ° , ) of β =20 ° : (1) counts the parameter computation such as Z, helix angle β , pressure angle An to give =21 of β of D=zmn/cos of reference circle diameter by the Mn of method extent modulus that give out, tine.

284 Mm, β =183 of D/tan of π of P= of corkscrewed yarn lead.

712 2, tine carries round diameter Da=d + 2mnhmn* on the head==25.

284, with drawing feature the command generates a diameter for 25.

The columnar; (2) of 284 Mm guides on columnar underside the person is single of axial gear chamfer hang down sectional, pitch is made on cylinder 183.

712 Mm, spiral diameter 21.

The corkscrewed yarn of 284 Mm, excise diagnostic command with scanning, hang down with axial gear chamfer sectional outline is scanning outline, corkscrewed yarn excises; (3) to make cone-shaped corkscrewed yarn in the extreme of corkscrewed yarn into line scanning for method () of ° of A=15 of angle of the Zhang Qu outside taper, the others parameter and a corkscrewed yarn are consistent, identical; (4) uses the cease angle of the corkscrewed yarn before initial point of view is mixed substance of the changeover in draft scale cites the tool changes form of alveolar extreme chamfer into draft, it is the contour line that scanning excises with this draft, undertake scanning excising for method with cone-shaped corkscrewed yarn, the array of; (5) of the part that retreat a knife that gets axial gear rear namely is alveolar with the part that retreat a knife, the three-dimensional axis gear that can gain a need builds a model (4) seeing a picture. Also can use composite curve tool to incorporate 2 corkscrewed yarn a curve is excised into line scanning. 3 calling drawing board of electron of CAXA of graph of CAXA scale tooth profile is our country the CAD software system of current and own copyright, it learns easily simply, the operation is convenient, support a variety of standard data port, can undertake with AutoCAD the file is exchanged conveniently. The move of graph of the tooth profile that move a person is as follows: (The order that 1) uses gear to generate in CAXA generates tooth profile of complete end panel to pursue (also can be) of individual tooth profile, use this figure "* next.

Dwg" format outputs; (2) to carry out " to open " command in SolidWorks, "* chooses in occurrence dialog box.

Dwg" , the "* that outputs CAXA next.

Dwg" file is opened, be defeated by a person to arrive in the spare parts, "mm" chooses in unit of data losing a person. Scale of so complete graph of end panel tooth profile ends. 4 epilogue pass example, the feature that uses SolidWorks builds modular function, the three-dimensional model of spare parts of machinery of apace scale helicoid, and offerred feasible processing technology in the light of among them gradual change place, three-dimensional to machinery standard component of the library build provided technical support, have certain and economic value. The key that draws helicoid with SolidWorks is choice good outline, should the feature according to the spare parts, use certainly hang down sectional outline or axis are sectional outline, in order to make place draws sectional outline graph as far as possible simple, such not only plot is convenient, also change a design to provide technical reference for parameter. CNC Milling